From: Andreas Steffen Date: Fri, 12 Oct 2007 22:49:39 +0000 (-0000) Subject: added get_publicKeyInfo() method X-Git-Tag: 4.1.8~6 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bad1a23f020dabec8fa88fd92d8f13cf361b22b0;p=thirdparty%2Fstrongswan.git added get_publicKeyInfo() method --- diff --git a/src/libstrongswan/crypto/rsa/rsa_public_key.c b/src/libstrongswan/crypto/rsa/rsa_public_key.c index 65159605dd..ad87ac76c2 100644 --- a/src/libstrongswan/crypto/rsa/rsa_public_key.c +++ b/src/libstrongswan/crypto/rsa/rsa_public_key.c @@ -274,54 +274,54 @@ end: return res; } + /** - * Implementation of rsa_public_key.get_key. + * Implementation of rsa_public_key_t.get_modulus. */ -static status_t get_key(const private_rsa_public_key_t *this, chunk_t *key) +static mpz_t *get_modulus(const private_rsa_public_key_t *this) { - chunk_t n, e; - - n.len = this->k; - n.ptr = mpz_export(NULL, NULL, 1, n.len, 1, 0, this->n); - e.len = this->k; - e.ptr = mpz_export(NULL, NULL, 1, e.len, 1, 0, this->e); - - key->len = this->k * 2; - key->ptr = malloc(key->len); - memcpy(key->ptr, n.ptr, n.len); - memcpy(key->ptr + n.len, e.ptr, e.len); - free(n.ptr); - free(e.ptr); - - return SUCCESS; + return (mpz_t*)&this->n; } /** - * Implementation of rsa_public_key.save_key. + * Implementation of rsa_public_key_t.get_keysize. */ -static status_t save_key(const private_rsa_public_key_t *this, char *file) +static size_t get_keysize(const private_rsa_public_key_t *this) { - return NOT_SUPPORTED; + return this->k; } /** - * Implementation of rsa_public_key.get_modulus. + * Build a DER-encoded publicKeyInfo object from an RSA public key. + * Also used in rsa_private_key.c. */ -static mpz_t *get_modulus(const private_rsa_public_key_t *this) +chunk_t rsa_public_key_info_to_asn1(const mpz_t n, const mpz_t e) { - return (mpz_t*)&this->n; + chunk_t rawKey = asn1_wrap(ASN1_SEQUENCE, "mm", + asn1_integer_from_mpz(n), + asn1_integer_from_mpz(e)); + chunk_t publicKey; + + u_char *pos = build_asn1_object(&publicKey, ASN1_BIT_STRING, 1 + rawKey.len); + + *pos++ = 0x00; + memcpy(pos, rawKey.ptr, rawKey.len); + free(rawKey.ptr); + + return asn1_wrap(ASN1_SEQUENCE, "cm", ASN1_rsaEncryption_id, + publicKey); } /** - * Implementation of rsa_public_key.get_keysize. + * Implementation of rsa_public_key_t.get_publicKeyInfo. */ -static size_t get_keysize(const private_rsa_public_key_t *this) +static chunk_t get_publicKeyInfo(const private_rsa_public_key_t *this) { - return this->k; + return rsa_public_key_info_to_asn1(this->n, this->e); } /** - * Implementation of rsa_public_key.get_keyid. + * Implementation of rsa_public_key_t.get_keyid. */ static chunk_t get_keyid(const private_rsa_public_key_t *this) { @@ -329,7 +329,7 @@ static chunk_t get_keyid(const private_rsa_public_key_t *this) } /** - * Implementation of rsa_public_key.clone. + * Implementation of rsa_public_key_t.clone. */ static rsa_public_key_t* _clone(const private_rsa_public_key_t *this) { @@ -344,7 +344,7 @@ static rsa_public_key_t* _clone(const private_rsa_public_key_t *this) } /** - * Implementation of rsa_public_key.destroy. + * Implementation of rsa_public_key_t.destroy. */ static void destroy(private_rsa_public_key_t *this) { @@ -363,10 +363,9 @@ private_rsa_public_key_t *rsa_public_key_create_empty(void) /* public functions */ this->public.verify_emsa_pkcs1_signature = (status_t (*) (const rsa_public_key_t*,hash_algorithm_t,chunk_t,chunk_t))verify_emsa_pkcs1_signature; - this->public.get_key = (status_t (*) (const rsa_public_key_t*,chunk_t*))get_key; - this->public.save_key = (status_t (*) (const rsa_public_key_t*,char*))save_key; this->public.get_modulus = (mpz_t *(*) (const rsa_public_key_t*))get_modulus; this->public.get_keysize = (size_t (*) (const rsa_public_key_t*))get_keysize; + this->public.get_publicKeyInfo = (chunk_t (*) (const rsa_public_key_t*))get_publicKeyInfo; this->public.get_keyid = (chunk_t (*) (const rsa_public_key_t*))get_keyid; this->public.clone = (rsa_public_key_t* (*) (const rsa_public_key_t*))_clone; this->public.destroy = (void (*) (rsa_public_key_t*))destroy; @@ -378,27 +377,6 @@ private_rsa_public_key_t *rsa_public_key_create_empty(void) return this; } -/** - * Build a DER-encoded publicKeyInfo object from an RSA public key. - * Also used in rsa_private_key.c. - */ -chunk_t rsa_public_key_info_to_asn1(const mpz_t n, const mpz_t e) -{ - chunk_t rawKey = asn1_wrap(ASN1_SEQUENCE, "mm", - asn1_integer_from_mpz(n), - asn1_integer_from_mpz(e)); - chunk_t publicKey; - - u_char *pos = build_asn1_object(&publicKey, ASN1_BIT_STRING, 1 + rawKey.len); - - *pos++ = 0x00; - memcpy(pos, rawKey.ptr, rawKey.len); - free(rawKey.ptr); - - return asn1_wrap(ASN1_SEQUENCE, "cm", ASN1_rsaEncryption_id, - publicKey); -} - /* * See header */ diff --git a/src/libstrongswan/crypto/rsa/rsa_public_key.h b/src/libstrongswan/crypto/rsa/rsa_public_key.h index 02300b5c2b..cd6e3716bb 100644 --- a/src/libstrongswan/crypto/rsa/rsa_public_key.h +++ b/src/libstrongswan/crypto/rsa/rsa_public_key.h @@ -74,33 +74,6 @@ struct rsa_public_key_t { hash_algorithm_t algorithm, chunk_t data, chunk_t signature); - /** - * @brief Gets the key. - * - * Currently uses a proprietary format which is only inteded - * for testing. This should be replaced with a proper - * ASN1 encoded key format, when charon gets the ASN1 - * capabilities. - * - * @param this calling object - * @param key key (in a propriarity format) - * @return - * - SUCCESS - * - INVALID_STATE, if key not set - */ - status_t (*get_key) (const rsa_public_key_t *this, chunk_t *key); - - /** - * @brief Saves a key to a file. - * - * Not implemented! - * - * @param this calling object - * @param file file to which the key should be written. - * @return NOT_SUPPORTED - */ - status_t (*save_key) (const rsa_public_key_t *this, char *file); - /** * @brief Get the modulus of the key. * @@ -117,6 +90,14 @@ struct rsa_public_key_t { */ size_t (*get_keysize) (const rsa_public_key_t *this); + /** + * @brief Get the DER encoded publicKeyInfo object. + * + * @param this calling object + * @return DER encoded publicKeyInfo object + */ + chunk_t (*get_publicKeyInfo) (const rsa_public_key_t *this); + /** * @brief Get the keyid formed as the SHA-1 hash of a publicKeyInfo object. *