From: slontis Date: Fri, 21 Jul 2023 05:05:38 +0000 (+1000) Subject: Add EVP_DigestSqueeze() API. X-Git-Tag: openssl-3.3.0-alpha1~640 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=536649082212e7c643ab8d7bab89f620fbcd37f0;p=thirdparty%2Fopenssl.git Add EVP_DigestSqueeze() API. Fixes #7894 This allows SHAKE to squeeze multiple times with different output sizes. The existing EVP_DigestFinalXOF() API has been left as a one shot operation. A similar interface is used by another toolkit. The low level SHA3_Squeeze() function needed to change slightly so that it can handle multiple squeezes. This involves changing the assembler code so that it passes a boolean to indicate whether the Keccak function should be called on entry. At the provider level, the squeeze is buffered, so that it only requests a multiple of the blocksize when SHA3_Squeeze() is called. On the first call the value is zero, on subsequent calls the value passed is 1. This PR is derived from the excellent work done by @nmathewson in https://github.com/openssl/openssl/pull/7921 Reviewed-by: Paul Dale Reviewed-by: Tomas Mraz (Merged from https://github.com/openssl/openssl/pull/21511) --- diff --git a/crypto/evp/digest.c b/crypto/evp/digest.c index 42331703da3..ab670a8f49c 100644 --- a/crypto/evp/digest.c +++ b/crypto/evp/digest.c @@ -502,6 +502,7 @@ int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *isize) return ret; } +/* This is a one shot operation */ int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, unsigned char *md, size_t size) { int ret = 0; @@ -526,10 +527,15 @@ int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, unsigned char *md, size_t size) return 0; } + /* + * For backward compatibility we pass the XOFLEN via a param here so that + * older providers can use the supplied value. Ideally we should have just + * used the size passed into ctx->digest->dfinal(). + */ params[i++] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_XOFLEN, &size); params[i++] = OSSL_PARAM_construct_end(); - if (EVP_MD_CTX_set_params(ctx, params) > 0) + if (EVP_MD_CTX_set_params(ctx, params) >= 0) ret = ctx->digest->dfinal(ctx->algctx, md, &size, size); ctx->flags |= EVP_MD_CTX_FLAG_FINALISED; @@ -553,6 +559,27 @@ legacy: return ret; } +/* EVP_DigestSqueeze() can be called multiple times */ +int EVP_DigestSqueeze(EVP_MD_CTX *ctx, unsigned char *md, size_t size) +{ + if (ctx->digest == NULL) { + ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_NULL_ALGORITHM); + return 0; + } + + if (ctx->digest->prov == NULL) { + ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION); + return 0; + } + + if (ctx->digest->dsqueeze == NULL) { + ERR_raise(ERR_LIB_EVP, EVP_R_METHOD_NOT_SUPPORTED); + return 0; + } + + return ctx->digest->dsqueeze(ctx->algctx, md, &size, size); +} + EVP_MD_CTX *EVP_MD_CTX_dup(const EVP_MD_CTX *in) { EVP_MD_CTX *out = EVP_MD_CTX_new(); @@ -1032,6 +1059,12 @@ static void *evp_md_from_algorithm(int name_id, fncnt++; } break; + case OSSL_FUNC_DIGEST_SQUEEZE: + if (md->dsqueeze == NULL) { + md->dsqueeze = OSSL_FUNC_digest_squeeze(fns); + fncnt++; + } + break; case OSSL_FUNC_DIGEST_DIGEST: if (md->digest == NULL) md->digest = OSSL_FUNC_digest_digest(fns); @@ -1075,7 +1108,7 @@ static void *evp_md_from_algorithm(int name_id, break; } } - if ((fncnt != 0 && fncnt != 5) + if ((fncnt != 0 && fncnt != 5 && fncnt != 6) || (fncnt == 0 && md->digest == NULL)) { /* * In order to be a consistent set of functions we either need the diff --git a/crypto/evp/legacy_sha.c b/crypto/evp/legacy_sha.c index 0c2afc29007..38423ff540f 100644 --- a/crypto/evp/legacy_sha.c +++ b/crypto/evp/legacy_sha.c @@ -37,7 +37,8 @@ static int nm##_update(EVP_MD_CTX *ctx, const void *data, size_t count) \ } \ static int nm##_final(EVP_MD_CTX *ctx, unsigned char *md) \ { \ - return fn##_final(md, EVP_MD_CTX_get0_md_data(ctx)); \ + KECCAK1600_CTX *kctx = EVP_MD_CTX_get0_md_data(ctx); \ + return fn##_final(kctx, md, kctx->md_size); \ } #define IMPLEMENT_LEGACY_EVP_MD_METH_SHAKE(nm, fn, tag) \ static int nm##_init(EVP_MD_CTX *ctx) \ diff --git a/crypto/sha/asm/keccak1600-armv4.pl b/crypto/sha/asm/keccak1600-armv4.pl index eaad86d39dd..18948fd7c0d 100755 --- a/crypto/sha/asm/keccak1600-armv4.pl +++ b/crypto/sha/asm/keccak1600-armv4.pl @@ -966,6 +966,8 @@ SHA3_squeeze: stmdb sp!,{r6-r9} mov r14,$A_flat + cmp r4, #0 @ r4 = 'next' argument + bne .Lnext_block b .Loop_squeeze .align 4 @@ -1037,7 +1039,7 @@ SHA3_squeeze: subs $bsz,$bsz,#8 @ bsz -= 8 bhi .Loop_squeeze - +.Lnext_block: mov r0,r14 @ original $A_flat bl KeccakF1600 diff --git a/crypto/sha/asm/keccak1600-armv8.pl b/crypto/sha/asm/keccak1600-armv8.pl index ab7aa713acd..72f8c3adb57 100755 --- a/crypto/sha/asm/keccak1600-armv8.pl +++ b/crypto/sha/asm/keccak1600-armv8.pl @@ -483,6 +483,8 @@ SHA3_squeeze: mov $out,x1 mov $len,x2 mov $bsz,x3 + cmp x4, #0 // x4 = 'next' argument + bne .Lnext_block .Loop_squeeze: ldr x4,[x0],#8 @@ -497,7 +499,7 @@ SHA3_squeeze: subs x3,x3,#8 bhi .Loop_squeeze - +.Lnext_block: mov x0,$A_flat bl KeccakF1600 mov x0,$A_flat diff --git a/crypto/sha/asm/keccak1600-ppc64.pl b/crypto/sha/asm/keccak1600-ppc64.pl index bff0d785859..3f8ba817f8d 100755 --- a/crypto/sha/asm/keccak1600-ppc64.pl +++ b/crypto/sha/asm/keccak1600-ppc64.pl @@ -668,6 +668,8 @@ SHA3_squeeze: subi $out,r4,1 ; prepare for stbu mr $len,r5 mr $bsz,r6 + ${UCMP}i r7,1 ; r7 = 'next' argument + blt .Lnext_block b .Loop_squeeze .align 4 @@ -698,6 +700,7 @@ SHA3_squeeze: subic. r6,r6,8 bgt .Loop_squeeze +.Lnext_block: mr r3,$A_flat bl KeccakF1600 subi r3,$A_flat,8 ; prepare for ldu diff --git a/crypto/sha/asm/keccak1600-x86_64.pl b/crypto/sha/asm/keccak1600-x86_64.pl index 02f0116014d..bddcaf82941 100755 --- a/crypto/sha/asm/keccak1600-x86_64.pl +++ b/crypto/sha/asm/keccak1600-x86_64.pl @@ -503,12 +503,12 @@ SHA3_absorb: .size SHA3_absorb,.-SHA3_absorb ___ } -{ my ($A_flat,$out,$len,$bsz) = ("%rdi","%rsi","%rdx","%rcx"); +{ my ($A_flat,$out,$len,$bsz,$next) = ("%rdi","%rsi","%rdx","%rcx","%r8"); ($out,$len,$bsz) = ("%r12","%r13","%r14"); $code.=<<___; .globl SHA3_squeeze -.type SHA3_squeeze,\@function,4 +.type SHA3_squeeze,\@function,5 .align 32 SHA3_squeeze: .cfi_startproc @@ -520,10 +520,12 @@ SHA3_squeeze: .cfi_push %r14 shr \$3,%rcx - mov $A_flat,%r8 + mov $A_flat,%r9 mov %rsi,$out mov %rdx,$len mov %rcx,$bsz + bt \$0,$next + jc .Lnext_block jmp .Loop_squeeze .align 32 @@ -531,8 +533,8 @@ SHA3_squeeze: cmp \$8,$len jb .Ltail_squeeze - mov (%r8),%rax - lea 8(%r8),%r8 + mov (%r9),%rax + lea 8(%r9),%r9 mov %rax,($out) lea 8($out),$out sub \$8,$len # len -= 8 @@ -540,14 +542,14 @@ SHA3_squeeze: sub \$1,%rcx # bsz-- jnz .Loop_squeeze - +.Lnext_block: call KeccakF1600 - mov $A_flat,%r8 + mov $A_flat,%r9 mov $bsz,%rcx jmp .Loop_squeeze .Ltail_squeeze: - mov %r8, %rsi + mov %r9, %rsi mov $out,%rdi mov $len,%rcx .byte 0xf3,0xa4 # rep movsb diff --git a/crypto/sha/keccak1600.c b/crypto/sha/keccak1600.c index c15bc42aaa8..6682367be19 100644 --- a/crypto/sha/keccak1600.c +++ b/crypto/sha/keccak1600.c @@ -13,7 +13,7 @@ size_t SHA3_absorb(uint64_t A[5][5], const unsigned char *inp, size_t len, size_t r); -void SHA3_squeeze(uint64_t A[5][5], unsigned char *out, size_t len, size_t r); +void SHA3_squeeze(uint64_t A[5][5], unsigned char *out, size_t len, size_t r, int next); #if !defined(KECCAK1600_ASM) || !defined(SELFTEST) @@ -1090,10 +1090,16 @@ size_t SHA3_absorb(uint64_t A[5][5], const unsigned char *inp, size_t len, } /* - * sha3_squeeze is called once at the end to generate |out| hash value - * of |len| bytes. + * SHA3_squeeze may be called after SHA3_absorb to generate |out| hash value of + * |len| bytes. + * If multiple SHA3_squeeze calls are required the output length |len| must be a + * multiple of the blocksize, with |next| being 0 on the first call and 1 on + * subsequent calls. It is the callers responsibility to buffer the results. + * When only a single call to SHA3_squeeze is required, |len| can be any size + * and |next| must be 0. */ -void SHA3_squeeze(uint64_t A[5][5], unsigned char *out, size_t len, size_t r) +void SHA3_squeeze(uint64_t A[5][5], unsigned char *out, size_t len, size_t r, + int next) { uint64_t *A_flat = (uint64_t *)A; size_t i, w = r / 8; @@ -1101,6 +1107,9 @@ void SHA3_squeeze(uint64_t A[5][5], unsigned char *out, size_t len, size_t r) assert(r < (25 * sizeof(A[0][0])) && (r % 8) == 0); while (len != 0) { + if (next) + KeccakF1600(A); + next = 1; for (i = 0; i < w && len != 0; i++) { uint64_t Ai = BitDeinterleave(A_flat[i]); @@ -1123,8 +1132,6 @@ void SHA3_squeeze(uint64_t A[5][5], unsigned char *out, size_t len, size_t r) out += 8; len -= 8; } - if (len) - KeccakF1600(A); } } #endif diff --git a/crypto/sha/sha3.c b/crypto/sha/sha3.c index 633bc2e1208..2411b3f1f8e 100644 --- a/crypto/sha/sha3.c +++ b/crypto/sha/sha3.c @@ -10,12 +10,13 @@ #include #include "internal/sha3.h" -void SHA3_squeeze(uint64_t A[5][5], unsigned char *out, size_t len, size_t r); +void SHA3_squeeze(uint64_t A[5][5], unsigned char *out, size_t len, size_t r, int next); void ossl_sha3_reset(KECCAK1600_CTX *ctx) { memset(ctx->A, 0, sizeof(ctx->A)); ctx->bufsz = 0; + ctx->xof_state = XOF_STATE_INIT; } int ossl_sha3_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen) @@ -51,6 +52,10 @@ int ossl_sha3_update(KECCAK1600_CTX *ctx, const void *_inp, size_t len) if (len == 0) return 1; + if (ctx->xof_state == XOF_STATE_SQUEEZE + || ctx->xof_state == XOF_STATE_FINAL) + return 0; + if ((num = ctx->bufsz) != 0) { /* process intermediate buffer? */ rem = bsz - num; @@ -84,13 +89,21 @@ int ossl_sha3_update(KECCAK1600_CTX *ctx, const void *_inp, size_t len) return 1; } -int ossl_sha3_final(unsigned char *md, KECCAK1600_CTX *ctx) +/* + * ossl_sha3_final()is a single shot method + * (Use ossl_sha3_squeeze for multiple calls). + * outlen is the variable size output. + */ +int ossl_sha3_final(KECCAK1600_CTX *ctx, unsigned char *out, size_t outlen) { size_t bsz = ctx->block_size; size_t num = ctx->bufsz; - if (ctx->md_size == 0) + if (outlen == 0) return 1; + if (ctx->xof_state == XOF_STATE_SQUEEZE + || ctx->xof_state == XOF_STATE_FINAL) + return 0; /* * Pad the data with 10*1. Note that |num| can be |bsz - 1| @@ -103,7 +116,86 @@ int ossl_sha3_final(unsigned char *md, KECCAK1600_CTX *ctx) (void)SHA3_absorb(ctx->A, ctx->buf, bsz, bsz); - SHA3_squeeze(ctx->A, md, ctx->md_size, bsz); + ctx->xof_state = XOF_STATE_FINAL; + SHA3_squeeze(ctx->A, out, outlen, bsz, 0); + return 1; +} + +/* + * This method can be called multiple times. + * Rather than heavily modifying assembler for SHA3_squeeze(), + * we instead just use the limitations of the existing function. + * i.e. Only request multiples of the ctx->block_size when calling + * SHA3_squeeze(). For output length requests smaller than the + * ctx->block_size just request a single ctx->block_size bytes and + * buffer the results. The next request will use the buffer first + * to grab output bytes. + */ +int ossl_sha3_squeeze(KECCAK1600_CTX *ctx, unsigned char *out, size_t outlen) +{ + size_t bsz = ctx->block_size; + size_t num = ctx->bufsz; + size_t len; + int next = 1; + + if (outlen == 0) + return 1; + + if (ctx->xof_state == XOF_STATE_FINAL) + return 0; + + /* + * On the first squeeze call, finish the absorb process, + * by adding the trailing padding and then doing + * a final absorb. + */ + if (ctx->xof_state != XOF_STATE_SQUEEZE) { + /* + * Pad the data with 10*1. Note that |num| can be |bsz - 1| + * in which case both byte operations below are performed on + * same byte... + */ + memset(ctx->buf + num, 0, bsz - num); + ctx->buf[num] = ctx->pad; + ctx->buf[bsz - 1] |= 0x80; + (void)SHA3_absorb(ctx->A, ctx->buf, bsz, bsz); + ctx->xof_state = XOF_STATE_SQUEEZE; + num = ctx->bufsz = 0; + next = 0; + } + + /* + * Step 1. Consume any bytes left over from a previous squeeze + * (See Step 4 below). + */ + if (num != 0) { + if (outlen > ctx->bufsz) + len = ctx->bufsz; + else + len = outlen; + memcpy(out, ctx->buf + bsz - ctx->bufsz, len); + out += len; + outlen -= len; + ctx->bufsz -= len; + } + if (outlen == 0) + return 1; + + /* Step 2. Copy full sized squeezed blocks to the output buffer directly */ + if (outlen >= bsz) { + len = bsz * (outlen / bsz); + SHA3_squeeze(ctx->A, out, len, bsz, next); + next = 1; + out += len; + outlen -= len; + } + if (outlen > 0) { + /* Step 3. Squeeze one more block into a buffer */ + SHA3_squeeze(ctx->A, ctx->buf, bsz, bsz, next); + memcpy(out, ctx->buf, outlen); + /* Step 4. Remember the leftover part of the squeezed block */ + ctx->bufsz = bsz - outlen; + } return 1; } diff --git a/doc/life-cycles/digest.dot b/doc/life-cycles/digest.dot index 8d4d72480c9..2f22a0d5e69 100644 --- a/doc/life-cycles/digest.dot +++ b/doc/life-cycles/digest.dot @@ -6,28 +6,30 @@ digraph digest { initialised [label=initialised, fontcolor="#c94c4c"]; updated [label=updated, fontcolor="#c94c4c"]; finaled [label="finaled", fontcolor="#c94c4c"]; + squeezed [label="squeezed", fontcolor="#c94c4c"]; end [label="freed", color="#deeaee", style="filled"]; begin -> newed [label="EVP_MD_CTX_new"]; - newed -> initialised [label="EVP_DigestInit"]; - initialised -> updated [label="EVP_DigestUpdate", weight=3]; + newed -> initialised [label="EVP_DigestInit", weight=100]; + initialised -> updated [label="EVP_DigestUpdate", weight=100]; updated -> updated [label="EVP_DigestUpdate"]; - updated -> finaled [label="EVP_DigestFinal"]; + updated -> finaled [label="EVP_DigestFinal", weight=2]; updated -> finaled [label="EVP_DigestFinalXOF", fontcolor="#808080", color="#808080"]; - /* Once this works it should go back in: - finaled -> finaled [taillabel="EVP_DigestFinalXOF", - labeldistance=9, labelangle=345, - labelfontcolor="#808080", color="#808080"]; - */ + updated -> squeezed [label="EVP_DigestSqueeze", weight=3]; finaled -> end [label="EVP_MD_CTX_free"]; - finaled -> newed [label="EVP_MD_CTX_reset", style=dashed, weight=2, + finaled -> newed [label="EVP_MD_CTX_reset", style=dashed, color="#034f84", fontcolor="#034f84"]; updated -> newed [label="EVP_MD_CTX_reset", style=dashed, color="#034f84", fontcolor="#034f84"]; - updated -> initialised [label="EVP_DigestInit", weight=0, style=dashed, + updated -> initialised [label="EVP_DigestInit", style=dashed, color="#034f84", fontcolor="#034f84"]; finaled -> initialised [label="EVP_DigestInit", style=dashed, color="#034f84", fontcolor="#034f84"]; + squeezed -> squeezed [label="EVP_DigestSqueeze"]; + squeezed -> end [label="EVP_MD_CTX_free", weight=1]; + squeezed -> newed [label="EVP_MD_CTX_reset", style=dashed, + color="#034f84", fontcolor="#034f84"]; + squeezed -> initialised [label="EVP_DigestInit", style=dashed, + color="#034f84", fontcolor="#034f84"]; } - diff --git a/doc/man3/EVP_DigestInit.pod b/doc/man3/EVP_DigestInit.pod index 409630e5d4d..492180def97 100644 --- a/doc/man3/EVP_DigestInit.pod +++ b/doc/man3/EVP_DigestInit.pod @@ -12,6 +12,7 @@ EVP_MD_CTX_settable_params, EVP_MD_CTX_gettable_params, EVP_MD_CTX_set_flags, EVP_MD_CTX_clear_flags, EVP_MD_CTX_test_flags, EVP_Q_digest, EVP_Digest, EVP_DigestInit_ex2, EVP_DigestInit_ex, EVP_DigestInit, EVP_DigestUpdate, EVP_DigestFinal_ex, EVP_DigestFinalXOF, EVP_DigestFinal, +EVP_DigestSqueeze, EVP_MD_is_a, EVP_MD_get0_name, EVP_MD_get0_description, EVP_MD_names_do_all, EVP_MD_get0_provider, EVP_MD_get_type, EVP_MD_get_pkey_type, EVP_MD_get_size, EVP_MD_get_block_size, EVP_MD_get_flags, @@ -61,7 +62,8 @@ EVP_MD_CTX_type, EVP_MD_CTX_pkey_ctx, EVP_MD_CTX_md_data int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl); int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *d, size_t cnt); int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s); - int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, unsigned char *md, size_t len); + int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, unsigned char *out, size_t outlen); + int EVP_DigestSqueeze(EVP_MD_CTX *ctx, unsigned char *out, size_t outlen); EVP_MD_CTX *EVP_MD_CTX_dup(const EVP_MD_CTX *in); int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in); @@ -291,9 +293,16 @@ initialize a new digest operation. =item EVP_DigestFinalXOF() Interfaces to extendable-output functions, XOFs, such as SHAKE128 and SHAKE256. -It retrieves the digest value from I and places it in I-sized I. +It retrieves the digest value from I and places it in I-sized I. After calling this function no additional calls to EVP_DigestUpdate() can be made, but EVP_DigestInit_ex2() can be called to initialize a new operation. +EVP_DigestFinalXOF() may only be called once + +=item EVP_DigestSqueeze() + +Similar to EVP_DigestFinalXOF() but allows multiple calls to be made to +squeeze variable length output data. +EVP_DigestFinalXOF() should not be called after this. =item EVP_MD_CTX_dup() @@ -478,8 +487,9 @@ EVP_MD_CTX_set_params() can be used with the following OSSL_PARAM keys: =item "xoflen" (B) Sets the digest length for extendable output functions. -It is used by the SHAKE algorithm and should not exceed what can be given -using a B. +The value should not exceed what can be given using a B. +It may be used by BLAKE2B-512, SHAKE-128 and SHAKE-256 to set the +output length used by EVP_DigestFinal_ex() and EVP_DigestFinal(). =item "pad-type" (B) @@ -795,7 +805,8 @@ EVP_MD_CTX_get0_md() instead. EVP_MD_CTX_update_fn() and EVP_MD_CTX_set_update_fn() were deprecated in OpenSSL 3.0. -EVP_MD_CTX_dup() was added in OpenSSL 3.2. +The functions EVP_MD_CTX_dup() and EVP_DigestSqueeze() were added in +OpenSSL 3.2. =head1 COPYRIGHT diff --git a/doc/man7/EVP_MD-BLAKE2.pod b/doc/man7/EVP_MD-BLAKE2.pod index 205b0c59be6..288a6dd7353 100644 --- a/doc/man7/EVP_MD-BLAKE2.pod +++ b/doc/man7/EVP_MD-BLAKE2.pod @@ -25,6 +25,17 @@ Known names are "BLAKE2B-512" and "BLAKE2b512". =back +=head2 Settable Parameters + +"BLAKE2B-512" supports the following EVP_MD_CTX_set_params() key +described in L. + +=over 4 + +=item "xoflen" (B) + +=back + =head2 Gettable Parameters This implementation supports the common gettable parameters described diff --git a/doc/man7/EVP_MD-SHAKE.pod b/doc/man7/EVP_MD-SHAKE.pod index 8a31cd53a8b..6f1fe9cae64 100644 --- a/doc/man7/EVP_MD-SHAKE.pod +++ b/doc/man7/EVP_MD-SHAKE.pod @@ -65,15 +65,28 @@ For backwards compatibility reasons the default xoflen length for SHAKE-256 is 32 (bytes) which results in a security strength of only 128 bits. To ensure the maximum security strength of 256 bits, the xoflen should be set to at least 64. +This parameter may be used when calling either EVP_DigestFinal_ex() or +EVP_DigestFinal(), since these functions were not designed to handle variable +length output. It is recommended to either use EVP_DigestSqueeze() or +EVP_DigestFinalXOF() instead. + =back +=head1 NOTES + +For SHAKE-128, to ensure the maximum security strength of 128 bits, the output +length passed to EVP_DigestFinalXOF() should be at least 32. + +For SHAKE-256, to ensure the maximum security strength of 256 bits, the output +length passed to EVP_DigestFinalXOF() should be at least 64. + =head1 SEE ALSO L, L, L =head1 COPYRIGHT -Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved. +Copyright 2020-2023 The OpenSSL Project Authors. All Rights Reserved. Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy diff --git a/doc/man7/img/digest.png b/doc/man7/img/digest.png index 9f35deb5dcc..8a9f78a26b3 100644 Binary files a/doc/man7/img/digest.png and b/doc/man7/img/digest.png differ diff --git a/doc/man7/life_cycle-digest.pod b/doc/man7/life_cycle-digest.pod index 709fd0d04ce..672e61c7e4b 100644 --- a/doc/man7/life_cycle-digest.pod +++ b/doc/man7/life_cycle-digest.pod @@ -32,6 +32,14 @@ additional input or generating output. =item finaled This state represents the MD when it has generated output. +For an XOF digest, this state represents the MD when it has generated a +single-shot output. + +=item squeezed + +For an XOF digest, this state represents the MD when it has generated output. +It can be called multiple times to generate more output. The output length is +variable for each call. =item freed @@ -46,39 +54,57 @@ The usual life-cycle of a MD is illustrated: =begin man - +-------------------+ - | start | - +-------------------+ - | - | EVP_MD_CTX_new - v - +-------------------+ EVP_MD_CTX_reset - | newed | <------------------------------+ - +-------------------+ | - | | - | EVP_DigestInit | - v | - +-------------------+ | - +--> | initialised | <+ EVP_DigestInit | - | +-------------------+ | | - | | | EVP_DigestUpdate | - | | EVP_DigestUpdate | +------------------+ | - | v | v | | - | +------------------------------------------------+ | - EVP_DigestInit | | updated | --+ - | +------------------------------------------------+ | - | | | | - | | EVP_DigestFinal | EVP_DigestFinalXOF | - | v v | - | +------------------------------------------------+ | - +--- | finaled | --+ - +------------------------------------------------+ - | - | EVP_MD_CTX_free - v - +-------------------+ - | freed | - +-------------------+ + +--------------------+ + | start | + +--------------------+ + | EVP_MD_CTX_reset + | EVP_MD_CTX_new +-------------------------------------------------+ + v v | + EVP_MD_CTX_reset + - - - - - - - - - - - - - - - - - - - - - - + EVP_MD_CTX_reset | + +-------------------> ' newed ' <--------------------+ | + | + - - - - - - - - - - - - - - - - - - - - - - + | | + | | | | + | | EVP_DigestInit | | + | v | | + | EVP_DigestInit + - - - - - - - - - - - - - - - - - - - - - - + | | + +----+-------------------> ' initialised ' <+ EVP_DigestInit | | + | | + - - - - - - - - - - - - - - - - - - - - - - + | | | + | | | ^ | | | + | | | EVP_DigestUpdate | EVP_DigestInit | | | + | | v | | | | + | | +---------------------------------------------+ | | | + | +-------------------- | | | | | + | | | | | | + | EVP_DigestUpdate | | | | | + | +-------------------- | | | | | + | | | updated | | | | + | +-------------------> | | | | | + | | | | | | + | | | | | | + +----+------------------------- | | -+-------------------+----+ | + | | +---------------------------------------------+ | | | | + | | | | | | | + | | | EVP_DigestSqueeze +-------------------+ | | | + | | v | | | | + | | EVP_DigestSqueeze +---------------------------------------------+ | | | + | | +-------------------- | | | | | + | | | | squeezed | | | | + | | +-------------------> | | ---------------------+ | | + | | +---------------------------------------------+ | | + | | | | | + | | +---------------------------------------+ | | + | | | | | + | | +---------------------------------------------+ EVP_DigestFinalXOF | | | + | +------------------------- | finaled | <--------------------+----+ | + | +---------------------------------------------+ | | + | EVP_DigestFinal ^ | | | | + +---------------------------------+ | | EVP_MD_CTX_free | | + | v | | + | +------------------+ EVP_MD_CTX_free | | + | | freed | <--------------------+ | + | +------------------+ | + | | + +------------------------------------------------------+ =end man @@ -91,19 +117,21 @@ This is the canonical list. =begin man - Function Call --------------------- Current State ---------------------- - start newed initialised updated finaled freed + Function Call --------------------- Current State ----------------------------------- + start newed initialised updated finaled squeezed freed EVP_MD_CTX_new newed - EVP_DigestInit initialised initialised initialised initialised + EVP_DigestInit initialised initialised initialised initialised initialised EVP_DigestUpdate updated updated EVP_DigestFinal finaled EVP_DigestFinalXOF finaled + EVP_DigestSqueeze squeezed squeezed EVP_MD_CTX_free freed freed freed freed freed EVP_MD_CTX_reset newed newed newed newed EVP_MD_CTX_get_params newed initialised updated EVP_MD_CTX_set_params newed initialised updated EVP_MD_CTX_gettable_params newed initialised updated EVP_MD_CTX_settable_params newed initialised updated + EVP_MD_CTX_copy_ex newed initialised updated squeezed =end man @@ -118,6 +146,7 @@ This is the canonical list. initialised updated finaled + squeezed freed EVP_MD_CTX_new newed @@ -125,6 +154,7 @@ This is the canonical list. + EVP_DigestInit @@ -132,6 +162,7 @@ This is the canonical list. initialised initialised initialised + initialised EVP_DigestUpdate @@ -139,6 +170,7 @@ This is the canonical list. updated updated + EVP_DigestFinal @@ -146,6 +178,15 @@ This is the canonical list. finaled + + +EVP_DigestSqueeze + + + + squeezed + + squeezed EVP_DigestFinalXOF @@ -153,6 +194,7 @@ This is the canonical list. finaled + EVP_MD_CTX_free freed @@ -160,6 +202,7 @@ This is the canonical list. freed freed freed + EVP_MD_CTX_reset @@ -167,6 +210,7 @@ This is the canonical list. newed newed newed + EVP_MD_CTX_get_params @@ -174,6 +218,7 @@ This is the canonical list. initialised updated + EVP_MD_CTX_set_params @@ -181,6 +226,7 @@ This is the canonical list. initialised updated + EVP_MD_CTX_gettable_params @@ -188,6 +234,7 @@ This is the canonical list. initialised updated + EVP_MD_CTX_settable_params @@ -195,6 +242,15 @@ This is the canonical list. initialised updated + + +EVP_MD_CTX_copy_ex + + newed + initialised + updated + + squeezed @@ -211,7 +267,7 @@ L, L =head1 COPYRIGHT -Copyright 2021 The OpenSSL Project Authors. All Rights Reserved. +Copyright 2021-2023 The OpenSSL Project Authors. All Rights Reserved. Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy diff --git a/doc/man7/provider-digest.pod b/doc/man7/provider-digest.pod index 2c99b8b3fb2..d23da59e1a0 100644 --- a/doc/man7/provider-digest.pod +++ b/doc/man7/provider-digest.pod @@ -198,8 +198,7 @@ This digest method can only handle one block of input. =item B -This digest method is an extensible-output function (XOF) and supports -setting the B parameter. +This digest method is an extensible-output function (XOF). =item B diff --git a/include/crypto/evp.h b/include/crypto/evp.h index 34cea2f9f4a..96133bf7f59 100644 --- a/include/crypto/evp.h +++ b/include/crypto/evp.h @@ -282,6 +282,7 @@ struct evp_md_st { OSSL_FUNC_digest_init_fn *dinit; OSSL_FUNC_digest_update_fn *dupdate; OSSL_FUNC_digest_final_fn *dfinal; + OSSL_FUNC_digest_squeeze_fn *dsqueeze; OSSL_FUNC_digest_digest_fn *digest; OSSL_FUNC_digest_freectx_fn *freectx; OSSL_FUNC_digest_dupctx_fn *dupctx; diff --git a/include/internal/sha3.h b/include/internal/sha3.h index 80ad86e58e3..332916aa547 100644 --- a/include/internal/sha3.h +++ b/include/internal/sha3.h @@ -22,23 +22,31 @@ typedef struct keccak_st KECCAK1600_CTX; -typedef size_t (sha3_absorb_fn)(void *vctx, const void *inp, size_t len); -typedef int (sha3_final_fn)(unsigned char *md, void *vctx); +typedef size_t (sha3_absorb_fn)(void *vctx, const void *in, size_t inlen); +typedef int (sha3_final_fn)(void *vctx, unsigned char *out, size_t outlen); +typedef int (sha3_squeeze_fn)(void *vctx, unsigned char *out, size_t outlen); typedef struct prov_sha3_meth_st { sha3_absorb_fn *absorb; sha3_final_fn *final; + sha3_squeeze_fn *squeeze; } PROV_SHA3_METHOD; +#define XOF_STATE_INIT 0 +#define XOF_STATE_ABSORB 1 +#define XOF_STATE_FINAL 2 +#define XOF_STATE_SQUEEZE 3 + struct keccak_st { uint64_t A[5][5]; + unsigned char buf[KECCAK1600_WIDTH / 8 - 32]; size_t block_size; /* cached ctx->digest->block_size */ size_t md_size; /* output length, variable in XOF */ size_t bufsz; /* used bytes in below buffer */ - unsigned char buf[KECCAK1600_WIDTH / 8 - 32]; unsigned char pad; PROV_SHA3_METHOD meth; + int xof_state; }; void ossl_sha3_reset(KECCAK1600_CTX *ctx); @@ -46,7 +54,8 @@ int ossl_sha3_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen); int ossl_keccak_kmac_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen); int ossl_sha3_update(KECCAK1600_CTX *ctx, const void *_inp, size_t len); -int ossl_sha3_final(unsigned char *md, KECCAK1600_CTX *ctx); +int ossl_sha3_final(KECCAK1600_CTX *ctx, unsigned char *out, size_t outlen); +int ossl_sha3_squeeze(KECCAK1600_CTX *ctx, unsigned char *out, size_t outlen); size_t SHA3_absorb(uint64_t A[5][5], const unsigned char *inp, size_t len, size_t r); diff --git a/include/openssl/core_dispatch.h b/include/openssl/core_dispatch.h index 9b03f20c3b7..a5bc2cf75d3 100644 --- a/include/openssl/core_dispatch.h +++ b/include/openssl/core_dispatch.h @@ -300,6 +300,7 @@ OSSL_CORE_MAKE_FUNC(int, provider_self_test, (void *provctx)) # define OSSL_FUNC_DIGEST_GETTABLE_PARAMS 11 # define OSSL_FUNC_DIGEST_SETTABLE_CTX_PARAMS 12 # define OSSL_FUNC_DIGEST_GETTABLE_CTX_PARAMS 13 +# define OSSL_FUNC_DIGEST_SQUEEZE 14 OSSL_CORE_MAKE_FUNC(void *, digest_newctx, (void *provctx)) OSSL_CORE_MAKE_FUNC(int, digest_init, (void *dctx, const OSSL_PARAM params[])) @@ -308,6 +309,9 @@ OSSL_CORE_MAKE_FUNC(int, digest_update, OSSL_CORE_MAKE_FUNC(int, digest_final, (void *dctx, unsigned char *out, size_t *outl, size_t outsz)) +OSSL_CORE_MAKE_FUNC(int, digest_squeeze, + (void *dctx, + unsigned char *out, size_t *outl, size_t outsz)) OSSL_CORE_MAKE_FUNC(int, digest_digest, (void *provctx, const unsigned char *in, size_t inl, unsigned char *out, size_t *outl, size_t outsz)) diff --git a/include/openssl/evp.h b/include/openssl/evp.h index ea7620d6315..f70b9d744d6 100644 --- a/include/openssl/evp.h +++ b/include/openssl/evp.h @@ -729,8 +729,10 @@ __owur int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in); __owur int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type); __owur int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s); -__owur int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, unsigned char *md, - size_t len); +__owur int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, unsigned char *out, + size_t outlen); +__owur int EVP_DigestSqueeze(EVP_MD_CTX *ctx, unsigned char *out, + size_t outlen); __owur EVP_MD *EVP_MD_fetch(OSSL_LIB_CTX *ctx, const char *algorithm, const char *properties); diff --git a/providers/implementations/digests/sha3_prov.c b/providers/implementations/digests/sha3_prov.c index 423bed7983e..19576c71909 100644 --- a/providers/implementations/digests/sha3_prov.c +++ b/providers/implementations/digests/sha3_prov.c @@ -33,10 +33,12 @@ static OSSL_FUNC_digest_update_fn keccak_update; static OSSL_FUNC_digest_final_fn keccak_final; static OSSL_FUNC_digest_freectx_fn keccak_freectx; static OSSL_FUNC_digest_dupctx_fn keccak_dupctx; +static OSSL_FUNC_digest_squeeze_fn shake_squeeze; static OSSL_FUNC_digest_set_ctx_params_fn shake_set_ctx_params; static OSSL_FUNC_digest_settable_ctx_params_fn shake_settable_ctx_params; static sha3_absorb_fn generic_sha3_absorb; static sha3_final_fn generic_sha3_final; +static sha3_squeeze_fn generic_sha3_squeeze; #if defined(OPENSSL_CPUID_OBJ) && defined(__s390__) && defined(KECCAK1600_ASM) /* @@ -103,20 +105,37 @@ static int keccak_update(void *vctx, const unsigned char *inp, size_t len) } static int keccak_final(void *vctx, unsigned char *out, size_t *outl, - size_t outsz) + size_t outlen) { int ret = 1; KECCAK1600_CTX *ctx = vctx; if (!ossl_prov_is_running()) return 0; - if (outsz > 0) - ret = ctx->meth.final(out, ctx); + if (outlen > 0) + ret = ctx->meth.final(ctx, out, ctx->md_size); *outl = ctx->md_size; return ret; } +static int shake_squeeze(void *vctx, unsigned char *out, size_t *outl, + size_t outlen) +{ + int ret = 1; + KECCAK1600_CTX *ctx = vctx; + + if (!ossl_prov_is_running()) + return 0; + if (ctx->meth.squeeze == NULL) + return 0; + if (outlen > 0) + ret = ctx->meth.squeeze(ctx, out, outlen); + + *outl = outlen; + return ret; +} + /*- * Generic software version of the absorb() and final(). */ @@ -127,15 +146,28 @@ static size_t generic_sha3_absorb(void *vctx, const void *inp, size_t len) return SHA3_absorb(ctx->A, inp, len, ctx->block_size); } -static int generic_sha3_final(unsigned char *md, void *vctx) +static int generic_sha3_final(void *vctx, unsigned char *out, size_t outlen) { - return ossl_sha3_final(md, (KECCAK1600_CTX *)vctx); + return ossl_sha3_final((KECCAK1600_CTX *)vctx, out, outlen); +} + +static int generic_sha3_squeeze(void *vctx, unsigned char *out, size_t outlen) +{ + return ossl_sha3_squeeze((KECCAK1600_CTX *)vctx, out, outlen); } static PROV_SHA3_METHOD sha3_generic_md = { generic_sha3_absorb, - generic_sha3_final + generic_sha3_final, + NULL +}; + +static PROV_SHA3_METHOD shake_generic_md = +{ + generic_sha3_absorb, + generic_sha3_final, + generic_sha3_squeeze }; #if defined(S390_SHA3) @@ -156,59 +188,60 @@ static size_t s390x_sha3_absorb(void *vctx, const void *inp, size_t len) return rem; } -static int s390x_sha3_final(unsigned char *md, void *vctx) +static int s390x_sha3_final(void *vctx, unsigned char *out, size_t outlen) { KECCAK1600_CTX *ctx = vctx; if (!ossl_prov_is_running()) return 0; s390x_klmd(ctx->buf, ctx->bufsz, NULL, 0, ctx->pad, ctx->A); - memcpy(md, ctx->A, ctx->md_size); + memcpy(out, ctx->A, outlen); return 1; } -static int s390x_shake_final(unsigned char *md, void *vctx) +static int s390x_shake_final(void *vctx, unsigned char *out, size_t outlen) { KECCAK1600_CTX *ctx = vctx; if (!ossl_prov_is_running()) return 0; - s390x_klmd(ctx->buf, ctx->bufsz, md, ctx->md_size, ctx->pad, ctx->A); + s390x_klmd(ctx->buf, ctx->bufsz, out, outlen, ctx->pad, ctx->A); return 1; } -static int s390x_keccakc_final(unsigned char *md, void *vctx, int padding) +static int s390x_keccakc_final(void *vctx, unsigned char *out, size_t outlen, + int padding) { KECCAK1600_CTX *ctx = vctx; size_t bsz = ctx->block_size; size_t num = ctx->bufsz; - size_t needed = ctx->md_size; + size_t needed = outlen; if (!ossl_prov_is_running()) return 0; - if (ctx->md_size == 0) + if (outlen == 0) return 1; memset(ctx->buf + num, 0, bsz - num); ctx->buf[num] = padding; ctx->buf[bsz - 1] |= 0x80; s390x_kimd(ctx->buf, bsz, ctx->pad, ctx->A); num = needed > bsz ? bsz : needed; - memcpy(md, ctx->A, num); + memcpy(out, ctx->A, num); needed -= num; if (needed > 0) - s390x_klmd(NULL, 0, md + bsz, needed, ctx->pad | S390X_KLMD_PS, ctx->A); + s390x_klmd(NULL, 0, out + bsz, needed, ctx->pad | S390X_KLMD_PS, ctx->A); return 1; } -static int s390x_keccak_final(unsigned char *md, void *vctx) +static int s390x_keccak_final(void *vctx, unsigned char *out, size_t outlen) { - return s390x_keccakc_final(md, vctx, 0x01); + return s390x_keccakc_final(vctx, out, outlen, 0x01); } -static int s390x_kmac_final(unsigned char *md, void *vctx) +static int s390x_kmac_final(void *vctx, unsigned char *out, size_t outlen) { - return s390x_keccakc_final(md, vctx, 0x04); + return s390x_keccakc_final(vctx, out, outlen, 0x04); } static PROV_SHA3_METHOD sha3_s390x_md = @@ -220,7 +253,7 @@ static PROV_SHA3_METHOD sha3_s390x_md = static PROV_SHA3_METHOD keccak_s390x_md = { s390x_sha3_absorb, - s390x_keccak_final + s390x_keccak_final, }; static PROV_SHA3_METHOD shake_s390x_md = @@ -235,6 +268,14 @@ static PROV_SHA3_METHOD kmac_s390x_md = s390x_kmac_final }; +# define SHAKE_SET_MD(uname, typ) \ + if (S390_SHA3_CAPABLE(uname)) { \ + ctx->pad = S390X_##uname; \ + ctx->meth = typ##_s390x_md; \ + } else { \ + ctx->meth = shake_generic_md; \ + } + # define SHA3_SET_MD(uname, typ) \ if (S390_SHA3_CAPABLE(uname)) { \ ctx->pad = S390X_##uname; \ @@ -255,7 +296,7 @@ static PROV_SHA3_METHOD kmac_s390x_md = static sha3_absorb_fn armsha3_sha3_absorb; size_t SHA3_absorb_cext(uint64_t A[5][5], const unsigned char *inp, size_t len, - size_t r); + size_t r); /*- * Hardware-assisted ARMv8.2 SHA3 extension version of the absorb() */ @@ -271,6 +312,19 @@ static PROV_SHA3_METHOD sha3_ARMSHA3_md = armsha3_sha3_absorb, generic_sha3_final }; +static PROV_SHA3_METHOD shake_ARMSHA3_md = +{ + armsha3_sha3_absorb, + generic_sha3_final, + generic_sha3_squeeze +}; +# define SHAKE_SET_MD(uname, typ) \ + if (OPENSSL_armcap_P & ARMV8_HAVE_SHA3_AND_WORTH_USING) { \ + ctx->meth = shake_ARMSHA3_md; \ + } else { \ + ctx->meth = shake_generic_md; \ + } + # define SHA3_SET_MD(uname, typ) \ if (OPENSSL_armcap_P & ARMV8_HAVE_SHA3_AND_WORTH_USING) { \ ctx->meth = sha3_ARMSHA3_md; \ @@ -286,6 +340,7 @@ static PROV_SHA3_METHOD sha3_ARMSHA3_md = #else # define SHA3_SET_MD(uname, typ) ctx->meth = sha3_generic_md; # define KMAC_SET_MD(bitlen) ctx->meth = sha3_generic_md; +# define SHAKE_SET_MD(uname, typ) ctx->meth = shake_generic_md; #endif /* S390_SHA3 */ #define SHA3_newctx(typ, uname, name, bitlen, pad) \ @@ -302,6 +357,20 @@ static void *name##_newctx(void *provctx) \ return ctx; \ } +#define SHAKE_newctx(typ, uname, name, bitlen, pad) \ +static OSSL_FUNC_digest_newctx_fn name##_newctx; \ +static void *name##_newctx(void *provctx) \ +{ \ + KECCAK1600_CTX *ctx = ossl_prov_is_running() ? OPENSSL_zalloc(sizeof(*ctx))\ + : NULL; \ + \ + if (ctx == NULL) \ + return NULL; \ + ossl_sha3_init(ctx, pad, bitlen); \ + SHAKE_SET_MD(uname, typ) \ + return ctx; \ +} + #define KMAC_newctx(uname, bitlen, pad) \ static OSSL_FUNC_digest_newctx_fn uname##_newctx; \ static void *uname##_newctx(void *provctx) \ @@ -333,6 +402,7 @@ const OSSL_DISPATCH ossl_##name##_functions[] = { \ #define PROV_FUNC_SHAKE_DIGEST(name, bitlen, blksize, dgstsize, flags) \ PROV_FUNC_SHA3_DIGEST_COMMON(name, bitlen, blksize, dgstsize, flags), \ + { OSSL_FUNC_DIGEST_SQUEEZE, (void (*)(void))shake_squeeze }, \ { OSSL_FUNC_DIGEST_INIT, (void (*)(void))keccak_init_params }, \ { OSSL_FUNC_DIGEST_SET_CTX_PARAMS, (void (*)(void))shake_set_ctx_params }, \ { OSSL_FUNC_DIGEST_SETTABLE_CTX_PARAMS, \ @@ -398,7 +468,7 @@ static int shake_set_ctx_params(void *vctx, const OSSL_PARAM params[]) SHA3_FLAGS) #define IMPLEMENT_SHAKE_functions(bitlen) \ - SHA3_newctx(shake, SHAKE_##bitlen, shake_##bitlen, bitlen, '\x1f') \ + SHAKE_newctx(shake, SHAKE_##bitlen, shake_##bitlen, bitlen, '\x1f') \ PROV_FUNC_SHAKE_DIGEST(shake_##bitlen, bitlen, \ SHA3_BLOCKSIZE(bitlen), SHA3_MDSIZE(bitlen), \ SHAKE_FLAGS) diff --git a/test/build.info b/test/build.info index 1784a41d8d2..10f29b19cfb 100644 --- a/test/build.info +++ b/test/build.info @@ -62,7 +62,8 @@ IF[{- !$disabled{tests} -}] bio_readbuffer_test user_property_test pkcs7_test upcallstest \ provfetchtest prov_config_test rand_test ca_internals_test \ bio_tfo_test membio_test bio_dgram_test list_test fips_version_test \ - x509_test hpke_test pairwise_fail_test nodefltctxtest + x509_test hpke_test pairwise_fail_test nodefltctxtest \ + evp_xof_test IF[{- !$disabled{'rpk'} -}] PROGRAMS{noinst}=rpktest @@ -558,6 +559,10 @@ IF[{- !$disabled{tests} -}] INCLUDE[evp_kdf_test]=../include ../apps/include DEPEND[evp_kdf_test]=../libcrypto libtestutil.a + SOURCE[evp_xof_test]=evp_xof_test.c + INCLUDE[evp_xof_test]=../include ../apps/include + DEPEND[evp_xof_test]=../libcrypto libtestutil.a + SOURCE[evp_pkey_dparams_test]=evp_pkey_dparams_test.c INCLUDE[evp_pkey_dparams_test]=../include ../apps/include DEPEND[evp_pkey_dparams_test]=../libcrypto libtestutil.a diff --git a/test/evp_xof_test.c b/test/evp_xof_test.c new file mode 100644 index 00000000000..eeff8667c41 --- /dev/null +++ b/test/evp_xof_test.c @@ -0,0 +1,492 @@ +/* + * Copyright 2023 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#include +#include +#include +#include "testutil.h" +#include "internal/nelem.h" + +static const unsigned char shake256_input[] = { + 0x8d, 0x80, 0x01, 0xe2, 0xc0, 0x96, 0xf1, 0xb8, + 0x8e, 0x7c, 0x92, 0x24, 0xa0, 0x86, 0xef, 0xd4, + 0x79, 0x7f, 0xbf, 0x74, 0xa8, 0x03, 0x3a, 0x2d, + 0x42, 0x2a, 0x2b, 0x6b, 0x8f, 0x67, 0x47, 0xe4 +}; + +/* + * This KAT output is 250 bytes, which is more than + * the SHAKE256 block size (136 bytes). + */ +static const unsigned char shake256_output[] = { + 0x2e, 0x97, 0x5f, 0x6a, 0x8a, 0x14, 0xf0, 0x70, + 0x4d, 0x51, 0xb1, 0x36, 0x67, 0xd8, 0x19, 0x5c, + 0x21, 0x9f, 0x71, 0xe6, 0x34, 0x56, 0x96, 0xc4, + 0x9f, 0xa4, 0xb9, 0xd0, 0x8e, 0x92, 0x25, 0xd3, + 0xd3, 0x93, 0x93, 0x42, 0x51, 0x52, 0xc9, 0x7e, + 0x71, 0xdd, 0x24, 0x60, 0x1c, 0x11, 0xab, 0xcf, + 0xa0, 0xf1, 0x2f, 0x53, 0xc6, 0x80, 0xbd, 0x3a, + 0xe7, 0x57, 0xb8, 0x13, 0x4a, 0x9c, 0x10, 0xd4, + 0x29, 0x61, 0x58, 0x69, 0x21, 0x7f, 0xdd, 0x58, + 0x85, 0xc4, 0xdb, 0x17, 0x49, 0x85, 0x70, 0x3a, + 0x6d, 0x6d, 0xe9, 0x4a, 0x66, 0x7e, 0xac, 0x30, + 0x23, 0x44, 0x3a, 0x83, 0x37, 0xae, 0x1b, 0xc6, + 0x01, 0xb7, 0x6d, 0x7d, 0x38, 0xec, 0x3c, 0x34, + 0x46, 0x31, 0x05, 0xf0, 0xd3, 0x94, 0x9d, 0x78, + 0xe5, 0x62, 0xa0, 0x39, 0xe4, 0x46, 0x95, 0x48, + 0xb6, 0x09, 0x39, 0x5d, 0xe5, 0xa4, 0xfd, 0x43, + 0xc4, 0x6c, 0xa9, 0xfd, 0x6e, 0xe2, 0x9a, 0xda, + 0x5e, 0xfc, 0x07, 0xd8, 0x4d, 0x55, 0x32, 0x49, + 0x45, 0x0d, 0xab, 0x4a, 0x49, 0xc4, 0x83, 0xde, + 0xd2, 0x50, 0xc9, 0x33, 0x8f, 0x85, 0xcd, 0x93, + 0x7a, 0xe6, 0x6b, 0xb4, 0x36, 0xf3, 0xb4, 0x02, + 0x6e, 0x85, 0x9f, 0xda, 0x1c, 0xa5, 0x71, 0x43, + 0x2f, 0x3b, 0xfc, 0x09, 0xe7, 0xc0, 0x3c, 0xa4, + 0xd1, 0x83, 0xb7, 0x41, 0x11, 0x1c, 0xa0, 0x48, + 0x3d, 0x0e, 0xda, 0xbc, 0x03, 0xfe, 0xb2, 0x3b, + 0x17, 0xee, 0x48, 0xe8, 0x44, 0xba, 0x24, 0x08, + 0xd9, 0xdc, 0xfd, 0x01, 0x39, 0xd2, 0xe8, 0xc7, + 0x31, 0x01, 0x25, 0xae, 0xe8, 0x01, 0xc6, 0x1a, + 0xb7, 0x90, 0x0d, 0x1e, 0xfc, 0x47, 0xc0, 0x78, + 0x28, 0x17, 0x66, 0xf3, 0x61, 0xc5, 0xe6, 0x11, + 0x13, 0x46, 0x23, 0x5e, 0x1d, 0xc3, 0x83, 0x25, + 0x66, 0x6c +}; + +static const unsigned char shake256_largemsg_input[] = { + 0xb2, 0xd2, 0x38, 0x65, 0xaf, 0x8f, 0x25, 0x6e, + 0x64, 0x40, 0xe2, 0x0d, 0x49, 0x8e, 0x3e, 0x64, + 0x46, 0xd2, 0x03, 0xa4, 0x19, 0xe3, 0x7b, 0x80, + 0xf7, 0x2b, 0x32, 0xe2, 0x76, 0x01, 0xfe, 0xdd, + 0xaa, 0x33, 0x3d, 0xe4, 0x8e, 0xe1, 0x5e, 0x39, + 0xa6, 0x92, 0xa3, 0xa7, 0xe3, 0x81, 0x24, 0x74, + 0xc7, 0x38, 0x18, 0x92, 0xc9, 0x60, 0x50, 0x15, + 0xfb, 0xd8, 0x04, 0xea, 0xea, 0x04, 0xd2, 0xc5, + 0xc6, 0x68, 0x04, 0x5b, 0xc3, 0x75, 0x12, 0xd2, + 0xbe, 0xa2, 0x67, 0x75, 0x24, 0xbf, 0x68, 0xad, + 0x10, 0x86, 0xb3, 0x2c, 0xb3, 0x74, 0xa4, 0x6c, + 0xf9, 0xd7, 0x1e, 0x58, 0x69, 0x27, 0x88, 0x49, + 0x4e, 0x99, 0x15, 0x33, 0x14, 0xf2, 0x49, 0x21, + 0xf4, 0x99, 0xb9, 0xde, 0xd4, 0xf1, 0x12, 0xf5, + 0x68, 0xe5, 0x5c, 0xdc, 0x9e, 0xc5, 0x80, 0x6d, + 0x39, 0x50, 0x08, 0x95, 0xbb, 0x12, 0x27, 0x50, + 0x89, 0xf0, 0xf9, 0xd5, 0x4a, 0x01, 0x0b, 0x0d, + 0x90, 0x9f, 0x1e, 0x4a, 0xba, 0xbe, 0x28, 0x36, + 0x19, 0x7d, 0x9c, 0x0a, 0x51, 0xfb, 0xeb, 0x00, + 0x02, 0x6c, 0x4b, 0x0a, 0xa8, 0x6c, 0xb7, 0xc4, + 0xc0, 0x92, 0x37, 0xa7, 0x2d, 0x49, 0x61, 0x80, + 0xd9, 0xdb, 0x20, 0x21, 0x9f, 0xcf, 0xb4, 0x57, + 0x69, 0x75, 0xfa, 0x1c, 0x95, 0xbf, 0xee, 0x0d, + 0x9e, 0x52, 0x6e, 0x1e, 0xf8, 0xdd, 0x41, 0x8c, + 0x3b, 0xaa, 0x57, 0x13, 0x84, 0x73, 0x52, 0x62, + 0x18, 0x76, 0x46, 0xcc, 0x4b, 0xcb, 0xbd, 0x40, + 0xa1, 0xf6, 0xff, 0x7b, 0x32, 0xb9, 0x90, 0x7c, + 0x53, 0x2c, 0xf9, 0x38, 0x72, 0x0f, 0xcb, 0x90, + 0x42, 0x5e, 0xe2, 0x80, 0x19, 0x26, 0xe7, 0x99, + 0x96, 0x98, 0x18, 0xb1, 0x86, 0x5b, 0x4c, 0xd9, + 0x08, 0x27, 0x31, 0x8f, 0xf0, 0x90, 0xd9, 0x35, + 0x6a, 0x1f, 0x75, 0xc2, 0xe0, 0xa7, 0x60, 0xb8, + 0x1d, 0xd6, 0x5f, 0x56, 0xb2, 0x0b, 0x27, 0x0e, + 0x98, 0x67, 0x1f, 0x39, 0x18, 0x27, 0x68, 0x0a, + 0xe8, 0x31, 0x1b, 0xc0, 0x97, 0xec, 0xd1, 0x20, + 0x2a, 0x55, 0x69, 0x23, 0x08, 0x50, 0x05, 0xec, + 0x13, 0x3b, 0x56, 0xfc, 0x18, 0xc9, 0x1a, 0xa9, + 0x69, 0x0e, 0xe2, 0xcc, 0xc8, 0xd6, 0x19, 0xbb, + 0x87, 0x3b, 0x42, 0x77, 0xee, 0x77, 0x81, 0x26, + 0xdd, 0xf6, 0x5d, 0xc3, 0xb2, 0xb0, 0xc4, 0x14, + 0x6d, 0xb5, 0x4f, 0xdc, 0x13, 0x09, 0xc8, 0x53, + 0x50, 0xb3, 0xea, 0xd3, 0x5f, 0x11, 0x67, 0xd4, + 0x2f, 0x6e, 0x30, 0x1a, 0xbe, 0xd6, 0xf0, 0x2d, + 0xc9, 0x29, 0xd9, 0x0a, 0xa8, 0x6f, 0xa4, 0x18, + 0x74, 0x6b, 0xd3, 0x5d, 0x6a, 0x73, 0x3a, 0xf2, + 0x94, 0x7f, 0xbd, 0xb4, 0xa6, 0x7f, 0x5b, 0x3d, + 0x26, 0xf2, 0x6c, 0x13, 0xcf, 0xb4, 0x26, 0x1e, + 0x38, 0x17, 0x66, 0x60, 0xb1, 0x36, 0xae, 0xe0, + 0x6d, 0x86, 0x69, 0xe7, 0xe7, 0xae, 0x77, 0x6f, + 0x7e, 0x99, 0xe5, 0xd9, 0x62, 0xc9, 0xfc, 0xde, + 0xb4, 0xee, 0x7e, 0xc8, 0xe9, 0xb7, 0x2c, 0xe2, + 0x70, 0xe8, 0x8b, 0x2d, 0x94, 0xad, 0xe8, 0x54, + 0xa3, 0x2d, 0x9a, 0xe2, 0x50, 0x63, 0x87, 0xb3, + 0x56, 0x29, 0xea, 0xa8, 0x5e, 0x96, 0x53, 0x9f, + 0x23, 0x8a, 0xef, 0xa3, 0xd4, 0x87, 0x09, 0x5f, + 0xba, 0xc3, 0xd1, 0xd9, 0x1a, 0x7b, 0x5c, 0x5d, + 0x5d, 0x89, 0xed, 0xb6, 0x6e, 0x39, 0x73, 0xa5, + 0x64, 0x59, 0x52, 0x8b, 0x61, 0x8f, 0x66, 0x69, + 0xb9, 0xf0, 0x45, 0x0a, 0x57, 0xcd, 0xc5, 0x7f, + 0x5d, 0xd0, 0xbf, 0xcc, 0x0b, 0x48, 0x12, 0xe1, + 0xe2, 0xc2, 0xea, 0xcc, 0x09, 0xd9, 0x42, 0x2c, + 0xef, 0x4f, 0xa7, 0xe9, 0x32, 0x5c, 0x3f, 0x22, + 0xc0, 0x45, 0x0b, 0x67, 0x3c, 0x31, 0x69, 0x29, + 0xa3, 0x39, 0xdd, 0x6e, 0x2f, 0xbe, 0x10, 0xc9, + 0x7b, 0xff, 0x19, 0x8a, 0xe9, 0xea, 0xfc, 0x32, + 0x41, 0x33, 0x70, 0x2a, 0x9a, 0xa4, 0xe6, 0xb4, + 0x7e, 0xb4, 0xc6, 0x21, 0x49, 0x5a, 0xfc, 0x45, + 0xd2, 0x23, 0xb3, 0x28, 0x4d, 0x83, 0x60, 0xfe, + 0x70, 0x68, 0x03, 0x59, 0xd5, 0x15, 0xaa, 0x9e, + 0xa0, 0x2e, 0x36, 0xb5, 0x61, 0x0f, 0x61, 0x05, + 0x3c, 0x62, 0x00, 0xa0, 0x47, 0xf1, 0x86, 0xba, + 0x33, 0xb8, 0xca, 0x60, 0x2f, 0x3f, 0x0a, 0x67, + 0x09, 0x27, 0x2f, 0xa2, 0x96, 0x02, 0x52, 0x58, + 0x55, 0x68, 0x80, 0xf4, 0x4f, 0x47, 0xba, 0xff, + 0x41, 0x7a, 0x40, 0x4c, 0xfd, 0x9d, 0x10, 0x72, + 0x0e, 0x20, 0xa9, 0x7f, 0x9b, 0x9b, 0x14, 0xeb, + 0x8e, 0x61, 0x25, 0xcb, 0xf4, 0x58, 0xff, 0x47, + 0xa7, 0x08, 0xd6, 0x4e, 0x2b, 0xf1, 0xf9, 0x89, + 0xd7, 0x22, 0x0f, 0x8d, 0x35, 0x07, 0xa0, 0x54, + 0xab, 0x83, 0xd8, 0xee, 0x5a, 0x3e, 0x88, 0x74, + 0x46, 0x41, 0x6e, 0x3e, 0xb7, 0xc0, 0xb6, 0x55, + 0xe0, 0x36, 0xc0, 0x2b, 0xbf, 0xb8, 0x24, 0x8a, + 0x44, 0x82, 0xf4, 0xcb, 0xb5, 0xd7, 0x41, 0x48, + 0x51, 0x08, 0xe0, 0x14, 0x34, 0xd2, 0x6d, 0xe9, + 0x7a, 0xec, 0x91, 0x61, 0xa7, 0xe1, 0x81, 0x69, + 0x47, 0x1c, 0xc7, 0xf3 +}; + +static const unsigned char shake256_largemsg_output[] = { + 0x64, 0xea, 0x24, 0x6a, 0xab, 0x80, 0x37, 0x9e, + 0x08, 0xe2, 0x19, 0x9e, 0x09, 0x69, 0xe2, 0xee, + 0x1a, 0x5d, 0xd1, 0x68, 0x68, 0xec, 0x8d, 0x42, + 0xd0, 0xf8, 0xb8, 0x44, 0x74, 0x54, 0x87, 0x3e, +}; + +static EVP_MD_CTX *shake_setup(const char *name) +{ + EVP_MD_CTX *ctx = NULL; + EVP_MD *md = NULL; + + if (!TEST_ptr(md = EVP_MD_fetch(NULL, name, NULL))) + return NULL; + + if (!TEST_ptr(ctx = EVP_MD_CTX_new())) + goto err; + if (!TEST_true(EVP_DigestInit_ex2(ctx, md, NULL))) + goto err; + EVP_MD_free(md); + return ctx; +err: + EVP_MD_free(md); + EVP_MD_CTX_free(ctx); + return NULL; +} + +static int shake_kat_test(void) +{ + int ret = 0; + EVP_MD_CTX *ctx = NULL; + unsigned char out[sizeof(shake256_output)]; + + if (!TEST_ptr(ctx = shake_setup("SHAKE256"))) + return 0; + if (!TEST_true(EVP_DigestUpdate(ctx, shake256_input, + sizeof(shake256_input))) + || !TEST_true(EVP_DigestFinalXOF(ctx, out, sizeof(out))) + || !TEST_mem_eq(out, sizeof(out), + shake256_output,sizeof(shake256_output)) + /* Test that a second call to EVP_DigestFinalXOF fails */ + || !TEST_false(EVP_DigestFinalXOF(ctx, out, sizeof(out))) + /* Test that a call to EVP_DigestSqueeze fails */ + || !TEST_false(EVP_DigestSqueeze(ctx, out, sizeof(out)))) + goto err; + ret = 1; +err: + EVP_MD_CTX_free(ctx); + return ret; +} + +static int shake_kat_digestfinal_test(void) +{ + int ret = 0; + unsigned int digest_length = 0; + EVP_MD_CTX *ctx = NULL; + unsigned char out[sizeof(shake256_output)]; + + if (!TEST_ptr(ctx = shake_setup("SHAKE256"))) + return 0; + if (!TEST_true(EVP_DigestUpdate(ctx, shake256_input, + sizeof(shake256_input))) + || !TEST_true(EVP_DigestFinal(ctx, out, &digest_length)) + || !TEST_uint_eq(digest_length, 32) + || !TEST_mem_eq(out, digest_length, + shake256_output, digest_length) + || !TEST_false(EVP_DigestFinalXOF(ctx, out, sizeof(out)))) + goto err; + ret = 1; +err: + EVP_MD_CTX_free(ctx); + return ret; +} + +/* + * Test that EVP_DigestFinal() returns the output length + * set by the OSSL_DIGEST_PARAM_XOFLEN param. + */ +static int shake_kat_digestfinal_xoflen_test(void) +{ + int ret = 0; + unsigned int digest_length = 0; + EVP_MD_CTX *ctx = NULL; + unsigned char out[sizeof(shake256_output)]; + OSSL_PARAM params[2]; + size_t sz = 12; + + if (!TEST_ptr(ctx = shake_setup("SHAKE256"))) + return 0; + + memset(out, 0, sizeof(out)); + params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_XOFLEN, &sz); + params[1] = OSSL_PARAM_construct_end(); + + if (!TEST_int_eq(EVP_MD_CTX_set_params(ctx, params), 1) + || !TEST_true(EVP_DigestUpdate(ctx, shake256_input, + sizeof(shake256_input))) + || !TEST_true(EVP_DigestFinal(ctx, out, &digest_length)) + || !TEST_uint_eq(digest_length, (unsigned int)sz) + || !TEST_mem_eq(out, digest_length, + shake256_output, digest_length) + || !TEST_uchar_eq(out[digest_length], 0)) + goto err; + ret = 1; +err: + EVP_MD_CTX_free(ctx); + return ret; +} + +/* + * Test that multiple absorb calls gives the expected result. + * This is a nested test that uses multiple strides for the input. + */ +static int shake_absorb_test(void) +{ + int ret = 0; + EVP_MD_CTX *ctx = NULL; + unsigned char out[sizeof(shake256_largemsg_output)]; + size_t total = sizeof(shake256_largemsg_input); + size_t i, stride, sz; + + if (!TEST_ptr(ctx = shake_setup("SHAKE256"))) + return 0; + + for (stride = 1; stride < total; ++stride) { + sz = 0; + for (i = 0; i < total; i += sz) { + sz += stride; + if ((i + sz) > total) + sz = total - i; + if (!TEST_true(EVP_DigestUpdate(ctx, shake256_largemsg_input + i, + sz))) + goto err; + } + if (!TEST_true(EVP_DigestFinalXOF(ctx, out, sizeof(out))) + || !TEST_mem_eq(out, sizeof(out), + shake256_largemsg_output, + sizeof(shake256_largemsg_output))) + goto err; + if (!TEST_true(EVP_DigestInit_ex2(ctx, NULL, NULL))) + goto err; + } + ret = 1; +err: + EVP_MD_CTX_free(ctx); + return ret; +} + +/* + * Table containing the size of the output to squeeze for the + * initially call, followed by a size for each subsequent call. + */ +static const struct { + size_t startsz, incsz; +} stride_tests[] = { + { 1, 1 }, + { 1, 136 }, + { 1, 136/2 }, + { 1, 136/2-1 }, + { 1, 136/2+1 }, + { 1, 136*3 }, + { 8, 8 }, + { 9, 9 }, + { 10, 10 }, + { 136/2 - 1, 136 }, + { 136/2 - 1, 136-1 }, + { 136/2 - 1, 136+1 }, + { 136/2, 136 }, + { 136/2, 136-1 }, + { 136/2, 136+1 }, + { 136/2 + 1, 136 }, + { 136/2 + 1, 136-1 }, + { 136/2 + 1, 136+1 }, + { 136, 2 }, + { 136, 136 }, + { 136-1, 136 }, + { 136-1, 136-1 }, + { 136-1, 136+1 }, + { 136+1, 136 }, + { 136+1, 136-1 }, + { 136+1, 136+1 }, + { 136*3, 136 }, + { 136*3, 136 + 1 }, + { 136*3, 136 - 1 }, + { 136*3, 136/2 }, + { 136*3, 136/2 + 1 }, + { 136*3, 136/2 - 1 }, +}; + +/* + * Helper to do multiple squeezes of output data using SHAKE256. + * tst is an index into the stride_tests[] containing an initial starting + * output length, followed by a second output length to use for all remaining + * squeezes. expected_outlen contains the total number of bytes to squeeze. + * in and inlen represent the input to absorb. expected_out and expected_outlen + * represent the expected output. + */ +static int do_shake_squeeze_test(int tst, + const unsigned char *in, size_t inlen, + const unsigned char *expected_out, + size_t expected_outlen) +{ + int ret = 0; + EVP_MD_CTX *ctx = NULL; + unsigned char *out = NULL; + size_t i = 0, sz = stride_tests[tst].startsz; + + if (!TEST_ptr(ctx = shake_setup("SHAKE256"))) + return 0; + if (!TEST_ptr(out = OPENSSL_malloc(expected_outlen))) + goto err; + if (!TEST_true(EVP_DigestUpdate(ctx, in, inlen))) + goto err; + + while (i < expected_outlen) { + if ((i + sz) > expected_outlen) + sz = expected_outlen - i; + if (!TEST_true(EVP_DigestSqueeze(ctx, out + i, sz))) + goto err; + i += sz; + sz = stride_tests[tst].incsz; + } + if (!TEST_mem_eq(out, expected_outlen, expected_out, expected_outlen)) + goto err; + ret = 1; +err: + OPENSSL_free(out); + EVP_MD_CTX_free(ctx); + return ret; +} + +static int shake_squeeze_kat_test(int tst) +{ + return do_shake_squeeze_test(tst, shake256_input, sizeof(shake256_input), + shake256_output, sizeof(shake256_output)); +} + +/* + * Generate some random input to absorb, and then + * squeeze it out in one operation to get a expected + * output. Use this to test that multiple squeeze calls + * on the same input gives the same output. + */ +static int shake_squeeze_large_test(int tst) +{ + int ret = 0; + EVP_MD_CTX *ctx = NULL; + unsigned char msg[16]; + unsigned char out[2000]; + + if (!TEST_int_gt(RAND_bytes(msg, sizeof(msg)), 0) + || !TEST_ptr(ctx = shake_setup("SHAKE256")) + || !TEST_true(EVP_DigestUpdate(ctx, msg, sizeof(msg))) + || !TEST_true(EVP_DigestFinalXOF(ctx, out, sizeof(out)))) + goto err; + + ret = do_shake_squeeze_test(tst, msg, sizeof(msg), out, sizeof(out)); +err: + EVP_MD_CTX_free(ctx); + return ret; +} + +static const size_t dupoffset_tests[] = { + 1, 135, 136, 137, 136*3-1, 136*3, 136*3+1 +}; + +/* Helper function to test that EVP_MD_CTX_dup() copies the internal state */ +static int do_shake_squeeze_dup_test(int tst, const char *alg, + const unsigned char *in, size_t inlen, + const unsigned char *expected_out, + size_t expected_outlen) +{ + int ret = 0; + EVP_MD_CTX *cur, *ctx = NULL, *dupctx = NULL; + unsigned char *out = NULL; + size_t i = 0, sz = 10; + size_t dupoffset = dupoffset_tests[tst]; + + if (!TEST_ptr(ctx = shake_setup(alg))) + return 0; + cur = ctx; + if (!TEST_ptr(out = OPENSSL_malloc(expected_outlen))) + goto err; + if (!TEST_true(EVP_DigestUpdate(ctx, in, inlen))) + goto err; + + while (i < expected_outlen) { + if ((i + sz) > expected_outlen) + sz = expected_outlen - i; + if (!TEST_true(EVP_DigestSqueeze(cur, out + i, sz))) + goto err; + i += sz; + /* At a certain offset we swap to a new ctx that copies the state */ + if (dupctx == NULL && i >= dupoffset) { + if (!TEST_ptr(dupctx = EVP_MD_CTX_dup(ctx))) + goto err; + cur = dupctx; + } + } + if (!TEST_mem_eq(out, expected_outlen, expected_out, expected_outlen)) + goto err; + ret = 1; +err: + OPENSSL_free(out); + EVP_MD_CTX_free(ctx); + EVP_MD_CTX_free(dupctx); + return ret; +} + +/* Test that the internal state can be copied */ +static int shake_squeeze_dup_test(int tst) +{ + int ret = 0; + EVP_MD_CTX *ctx = NULL; + unsigned char msg[16]; + unsigned char out[1000]; + const char *alg = "SHAKE128"; + + if (!TEST_int_gt(RAND_bytes(msg, sizeof(msg)), 0) + || !TEST_ptr(ctx = shake_setup(alg)) + || !TEST_true(EVP_DigestUpdate(ctx, msg, sizeof(msg))) + || !TEST_true(EVP_DigestFinalXOF(ctx, out, sizeof(out)))) + goto err; + + ret = do_shake_squeeze_dup_test(tst, alg, msg, sizeof(msg), + out, sizeof(out)); +err: + EVP_MD_CTX_free(ctx); + return ret; +} + +int setup_tests(void) +{ + ADD_TEST(shake_kat_test); + ADD_TEST(shake_kat_digestfinal_test); + ADD_TEST(shake_kat_digestfinal_xoflen_test); + ADD_TEST(shake_absorb_test); + ADD_ALL_TESTS(shake_squeeze_kat_test, OSSL_NELEM(stride_tests)); + ADD_ALL_TESTS(shake_squeeze_large_test, OSSL_NELEM(stride_tests)); + ADD_ALL_TESTS(shake_squeeze_dup_test, OSSL_NELEM(dupoffset_tests)); + return 1; +} diff --git a/test/recipes/30-test_evp_xof.t b/test/recipes/30-test_evp_xof.t new file mode 100644 index 00000000000..c3dd6062de1 --- /dev/null +++ b/test/recipes/30-test_evp_xof.t @@ -0,0 +1,12 @@ +#! /usr/bin/env perl +# Copyright 2023 The OpenSSL Project Authors. All Rights Reserved. +# +# Licensed under the Apache License 2.0 (the "License"). You may not use +# this file except in compliance with the License. You can obtain a copy +# in the file LICENSE in the source distribution or at +# https://www.openssl.org/source/license.html + + +use OpenSSL::Test::Simple; + +simple_test("test_evp_xof", "evp_xof_test"); diff --git a/util/libcrypto.num b/util/libcrypto.num index a16f93db47e..b64b0ddc5cb 100644 --- a/util/libcrypto.num +++ b/util/libcrypto.num @@ -5536,3 +5536,4 @@ X509_STORE_CTX_set_get_crl ? 3_2_0 EXIST::FUNCTION: X509_STORE_CTX_set_current_reasons ? 3_2_0 EXIST::FUNCTION: OSSL_STORE_delete ? 3_2_0 EXIST::FUNCTION: BIO_ADDR_copy ? 3_2_0 EXIST::FUNCTION:SOCK +EVP_DigestSqueeze ? 3_2_0 EXIST::FUNCTION: