diff options
Diffstat (limited to 'src/libstrongswan/credentials/keys/public_key.c')
| -rw-r--r-- | src/libstrongswan/credentials/keys/public_key.c | 148 |
1 files changed, 146 insertions, 2 deletions
diff --git a/src/libstrongswan/credentials/keys/public_key.c b/src/libstrongswan/credentials/keys/public_key.c index c342ac128..bd5915e60 100644 --- a/src/libstrongswan/credentials/keys/public_key.c +++ b/src/libstrongswan/credentials/keys/public_key.c @@ -1,4 +1,5 @@ /* + * Copyright (C) 2015 Tobias Brunner * Copyright (C) 2007 Martin Willi * Copyright (C) 2014 Andreas Steffen * HSR Hochschule fuer Technik Rapperswil @@ -142,8 +143,151 @@ signature_scheme_t signature_scheme_from_oid(int oid) return SIGN_BLISS_WITH_SHA256; case OID_BLISS_WITH_SHA384: return SIGN_BLISS_WITH_SHA384; - default: - return SIGN_UNKNOWN; } + return SIGN_UNKNOWN; } +/* + * Defined in header. + */ +int signature_scheme_to_oid(signature_scheme_t scheme) +{ + switch (scheme) + { + case SIGN_UNKNOWN: + case SIGN_RSA_EMSA_PKCS1_NULL: + case SIGN_ECDSA_WITH_NULL: + case SIGN_ECDSA_256: + case SIGN_ECDSA_384: + case SIGN_ECDSA_521: + break; + case SIGN_RSA_EMSA_PKCS1_MD5: + return OID_MD5_WITH_RSA; + case SIGN_RSA_EMSA_PKCS1_SHA1: + return OID_SHA1_WITH_RSA; + case SIGN_RSA_EMSA_PKCS1_SHA224: + return OID_SHA224_WITH_RSA; + case SIGN_RSA_EMSA_PKCS1_SHA256: + return OID_SHA256_WITH_RSA; + case SIGN_RSA_EMSA_PKCS1_SHA384: + return OID_SHA384_WITH_RSA; + case SIGN_RSA_EMSA_PKCS1_SHA512: + return OID_SHA512_WITH_RSA; + case SIGN_ECDSA_WITH_SHA1_DER: + return OID_ECDSA_WITH_SHA1; + case SIGN_ECDSA_WITH_SHA256_DER: + return OID_ECDSA_WITH_SHA256; + case SIGN_ECDSA_WITH_SHA384_DER: + return OID_ECDSA_WITH_SHA384; + case SIGN_ECDSA_WITH_SHA512_DER: + return OID_ECDSA_WITH_SHA512; + case SIGN_BLISS_WITH_SHA256: + return OID_BLISS_WITH_SHA256; + case SIGN_BLISS_WITH_SHA384: + return OID_BLISS_WITH_SHA384; + case SIGN_BLISS_WITH_SHA512: + return OID_BLISS_WITH_SHA512; + } + return OID_UNKNOWN; +} + +/** + * Map for signature schemes to the key type and maximum key size allowed. + * We only cover schemes with hash algorithms supported by IKEv2 signature + * authentication. + */ +static struct { + signature_scheme_t scheme; + key_type_t type; + int max_keysize; +} scheme_map[] = { + { SIGN_RSA_EMSA_PKCS1_SHA256, KEY_RSA, 3072 }, + { SIGN_RSA_EMSA_PKCS1_SHA384, KEY_RSA, 7680 }, + { SIGN_RSA_EMSA_PKCS1_SHA512, KEY_RSA, 0 }, + { SIGN_ECDSA_WITH_SHA256_DER, KEY_ECDSA, 256 }, + { SIGN_ECDSA_WITH_SHA384_DER, KEY_ECDSA, 384 }, + { SIGN_ECDSA_WITH_SHA512_DER, KEY_ECDSA, 0 }, + { SIGN_BLISS_WITH_SHA256, KEY_BLISS, 128 }, + { SIGN_BLISS_WITH_SHA384, KEY_BLISS, 192 }, + { SIGN_BLISS_WITH_SHA512, KEY_BLISS, 0 }, +}; + +/** + * Private data for signature scheme enumerator + */ +typedef struct { + enumerator_t public; + int index; + key_type_t type; + int size; +} private_enumerator_t; + +METHOD(enumerator_t, signature_schemes_enumerate, bool, + private_enumerator_t *this, signature_scheme_t *scheme) +{ + while (++this->index < countof(scheme_map)) + { + if (this->type == scheme_map[this->index].type && + (this->size <= scheme_map[this->index].max_keysize || + !scheme_map[this->index].max_keysize)) + { + *scheme = scheme_map[this->index].scheme; + return TRUE; + } + } + return FALSE; +} + +/* + * Defined in header. + */ +enumerator_t *signature_schemes_for_key(key_type_t type, int size) +{ + private_enumerator_t *this; + + INIT(this, + .public = { + .enumerate = (void*)_signature_schemes_enumerate, + .destroy = (void*)free, + }, + .index = -1, + .type = type, + .size = size, + ); + + return &this->public; +} + +/* + * Defined in header. + */ +key_type_t key_type_from_signature_scheme(signature_scheme_t scheme) +{ + switch (scheme) + { + case SIGN_UNKNOWN: + break; + case SIGN_RSA_EMSA_PKCS1_NULL: + case SIGN_RSA_EMSA_PKCS1_MD5: + case SIGN_RSA_EMSA_PKCS1_SHA1: + case SIGN_RSA_EMSA_PKCS1_SHA224: + case SIGN_RSA_EMSA_PKCS1_SHA256: + case SIGN_RSA_EMSA_PKCS1_SHA384: + case SIGN_RSA_EMSA_PKCS1_SHA512: + return KEY_RSA; + case SIGN_ECDSA_WITH_SHA1_DER: + case SIGN_ECDSA_WITH_SHA256_DER: + case SIGN_ECDSA_WITH_SHA384_DER: + case SIGN_ECDSA_WITH_SHA512_DER: + case SIGN_ECDSA_WITH_NULL: + case SIGN_ECDSA_256: + case SIGN_ECDSA_384: + case SIGN_ECDSA_521: + return KEY_ECDSA; + case SIGN_BLISS_WITH_SHA256: + case SIGN_BLISS_WITH_SHA384: + case SIGN_BLISS_WITH_SHA512: + return KEY_BLISS; + } + return KEY_ANY; +} |