A context for SSKDF can be obtained by calling:
EVP_KDF *kdf = EVP_KDF_fetch(NULL, "SSKDF", NULL);
- EVP_KDF_CTX *kctx = EVP_KDF_new_ctx(kdf);
+ EVP_KDF_CTX *kctx = EVP_KDF_CTX_new(kdf);
The output length of an SSKDF is specified via the I<keylen>
parameter to the L<EVP_KDF_derive(3)> function.
OSSL_PARAM params[4], *p = params;
kdf = EVP_KDF_fetch(NULL, "SSKDF", NULL);
- kctx = EVP_KDF_new_ctx(kdf);
+ kctx = EVP_KDF_CTX_new(kdf);
EVP_KDF_free(kdf);
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST,
*p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_INFO,
"label", (size_t)5);
*p = OSSL_PARAM_construct_end();
- if (EVP_KDF_set_ctx_params(kctx, params) <= 0) {
- error("EVP_KDF_set_ctx_params");
+ if (EVP_KDF_CTX_set_params(kctx, params) <= 0) {
+ error("EVP_KDF_CTX_set_params");
}
if (EVP_KDF_derive(kctx, out, sizeof(out)) <= 0) {
error("EVP_KDF_derive");
}
- EVP_KDF_free_ctx(kctx);
+ EVP_KDF_CTX_free(kctx);
This example derives 10 bytes using H(x) = HMAC(SHA-256), with the secret key "secret",
fixedinfo value "label" and salt "salt":
OSSL_PARAM params[6], *p = params;
kdf = EVP_KDF_fetch(NULL, "SSKDF", NULL);
- kctx = EVP_KDF_new_ctx(kdf);
+ kctx = EVP_KDF_CTX_new(kdf);
EVP_KDF_free(kdf);
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_MAC,
*p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SALT,
"salt", (size_t)4);
*p = OSSL_PARAM_construct_end();
- if (EVP_KDF_set_ctx_params(kctx, params) <= 0) {
- error("EVP_KDF_set_ctx_params");
+ if (EVP_KDF_CTX_set_params(kctx, params) <= 0) {
+ error("EVP_KDF_CTX_set_params");
}
if (EVP_KDF_derive(kctx, out, sizeof(out)) <= 0) {
error("EVP_KDF_derive");
}
- EVP_KDF_free_ctx(kctx);
+ EVP_KDF_CTX_free(kctx);
This example derives 10 bytes using H(x) = KMAC128(x,salt,outlen), with the secret key "secret"
fixedinfo value "label", salt of "salt" and KMAC outlen of 20:
OSSL_PARAM params[7], *p = params;
kdf = EVP_KDF_fetch(NULL, "SSKDF", NULL);
- kctx = EVP_KDF_new_ctx(kdf);
+ kctx = EVP_KDF_CTX_new(kdf);
EVP_KDF_free(kdf);
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_MAC,
"salt", (size_t)4);
*p++ = OSSL_PARAM_construct_size_t(OSSL_KDF_PARAM_MAC_SIZE, (size_t)20);
*p = OSSL_PARAM_construct_end();
- if (EVP_KDF_set_ctx_params(kctx, params) <= 0) {
- error("EVP_KDF_set_ctx_params");
+ if (EVP_KDF_CTX_set_params(kctx, params) <= 0) {
+ error("EVP_KDF_CTX_set_params");
}
if (EVP_KDF_derive(kctx, out, sizeof(out)) <= 0) {
error("EVP_KDF_derive");
}
- EVP_KDF_free_ctx(kctx);
+ EVP_KDF_CTX_free(kctx);
=head1 CONFORMING TO
=head1 SEE ALSO
L<EVP_KDF(3)>,
-L<EVP_KDF_new_ctx(3)>,
-L<EVP_KDF_free_ctx(3)>,
-L<EVP_KDF_set_ctx_params(3)>,
+L<EVP_KDF_CTX_new(3)>,
+L<EVP_KDF_CTX_free(3)>,
+L<EVP_KDF_CTX_set_params(3)>,
L<EVP_KDF_size(3)>,
L<EVP_KDF_derive(3)>,
L<EVP_KDF(3)/PARAMETERS>