Mercurial > dropbear
view libtomcrypt/src/pk/rsa/rsa_import_pkcs8.c @ 1854:cba37fe1ddc8
Fix accidentally committed debug message
Was added Oct 18 2021
"Only redirect stderr after the session login."
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Sat, 22 Jan 2022 12:46:08 +0800 (2022-01-22) |
parents | e9dba7abd939 |
children |
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis * * LibTomCrypt is a library that provides various cryptographic * algorithms in a highly modular and flexible manner. * * The library is free for all purposes without any express * guarantee it works. */ #include "tomcrypt.h" /** @file rsa_import_pkcs8.c Import a PKCS RSA key */ #ifdef LTC_MRSA /* Public-Key Cryptography Standards (PKCS) #8: * Private-Key Information Syntax Specification Version 1.2 * https://tools.ietf.org/html/rfc5208 * * PrivateKeyInfo ::= SEQUENCE { * version Version, * privateKeyAlgorithm PrivateKeyAlgorithmIdentifier, * privateKey PrivateKey, * attributes [0] IMPLICIT Attributes OPTIONAL } * where: * - Version ::= INTEGER * - PrivateKeyAlgorithmIdentifier ::= AlgorithmIdentifier * - PrivateKey ::= OCTET STRING * - Attributes ::= SET OF Attribute * * EncryptedPrivateKeyInfo ::= SEQUENCE { * encryptionAlgorithm EncryptionAlgorithmIdentifier, * encryptedData EncryptedData } * where: * - EncryptionAlgorithmIdentifier ::= AlgorithmIdentifier * - EncryptedData ::= OCTET STRING */ /** Import an RSAPublicKey or RSAPrivateKey in PKCS#8 format @param in The packet to import from @param inlen It's length (octets) @param passwd The password for decrypting privkey (NOT SUPPORTED YET) @param passwdlen Password's length (octets) @param key [out] Destination for newly imported key @return CRYPT_OK if successful, upon error allocated memory is freed */ int rsa_import_pkcs8(const unsigned char *in, unsigned long inlen, const void *passwd, unsigned long passwdlen, rsa_key *key) { int err; void *zero, *iter; unsigned char *buf1 = NULL, *buf2 = NULL; unsigned long buf1len, buf2len; unsigned long oid[16]; oid_st rsaoid; ltc_asn1_list alg_seq[2], top_seq[3]; ltc_asn1_list alg_seq_e[2], key_seq_e[2], top_seq_e[2]; unsigned char *decrypted = NULL; unsigned long decryptedlen; LTC_ARGCHK(in != NULL); LTC_ARGCHK(key != NULL); LTC_ARGCHK(ltc_mp.name != NULL); /* get RSA alg oid */ err = pk_get_oid(PKA_RSA, &rsaoid); if (err != CRYPT_OK) { goto LBL_NOFREE; } /* alloc buffers */ buf1len = inlen; /* approx. */ buf1 = XMALLOC(buf1len); if (buf1 == NULL) { err = CRYPT_MEM; goto LBL_NOFREE; } buf2len = inlen; /* approx. */ buf2 = XMALLOC(buf2len); if (buf2 == NULL) { err = CRYPT_MEM; goto LBL_FREE1; } /* init key */ err = mp_init_multi(&key->e, &key->d, &key->N, &key->dQ, &key->dP, &key->qP, &key->p, &key->q, &zero, &iter, NULL); if (err != CRYPT_OK) { goto LBL_FREE2; } /* try to decode encrypted priv key */ LTC_SET_ASN1(key_seq_e, 0, LTC_ASN1_OCTET_STRING, buf1, buf1len); LTC_SET_ASN1(key_seq_e, 1, LTC_ASN1_INTEGER, iter, 1UL); LTC_SET_ASN1(alg_seq_e, 0, LTC_ASN1_OBJECT_IDENTIFIER, oid, 16UL); LTC_SET_ASN1(alg_seq_e, 1, LTC_ASN1_SEQUENCE, key_seq_e, 2UL); LTC_SET_ASN1(top_seq_e, 0, LTC_ASN1_SEQUENCE, alg_seq_e, 2UL); LTC_SET_ASN1(top_seq_e, 1, LTC_ASN1_OCTET_STRING, buf2, buf2len); err=der_decode_sequence(in, inlen, top_seq_e, 2UL); if (err == CRYPT_OK) { LTC_UNUSED_PARAM(passwd); LTC_UNUSED_PARAM(passwdlen); /* XXX: TODO encrypted pkcs8 not implemented yet */ /* fprintf(stderr, "decrypt: iter=%ld salt.len=%ld encdata.len=%ld\n", mp_get_int(iter), key_seq_e[0].size, top_seq_e[1].size); */ err = CRYPT_PK_INVALID_TYPE; goto LBL_ERR; } else { decrypted = (unsigned char *)in; decryptedlen = inlen; } /* try to decode unencrypted priv key */ LTC_SET_ASN1(alg_seq, 0, LTC_ASN1_OBJECT_IDENTIFIER, oid, 16UL); LTC_SET_ASN1(alg_seq, 1, LTC_ASN1_NULL, NULL, 0UL); LTC_SET_ASN1(top_seq, 0, LTC_ASN1_INTEGER, zero, 1UL); LTC_SET_ASN1(top_seq, 1, LTC_ASN1_SEQUENCE, alg_seq, 2UL); LTC_SET_ASN1(top_seq, 2, LTC_ASN1_OCTET_STRING, buf1, buf1len); err=der_decode_sequence(decrypted, decryptedlen, top_seq, 3UL); if (err != CRYPT_OK) { goto LBL_ERR; } /* check alg oid */ if ((alg_seq[0].size != rsaoid.OIDlen) || XMEMCMP(rsaoid.OID, alg_seq[0].data, rsaoid.OIDlen * sizeof(rsaoid.OID[0])) != 0) { err = CRYPT_PK_INVALID_TYPE; goto LBL_ERR; } err = der_decode_sequence_multi(buf1, top_seq[2].size, LTC_ASN1_INTEGER, 1UL, zero, LTC_ASN1_INTEGER, 1UL, key->N, LTC_ASN1_INTEGER, 1UL, key->e, LTC_ASN1_INTEGER, 1UL, key->d, LTC_ASN1_INTEGER, 1UL, key->p, LTC_ASN1_INTEGER, 1UL, key->q, LTC_ASN1_INTEGER, 1UL, key->dP, LTC_ASN1_INTEGER, 1UL, key->dQ, LTC_ASN1_INTEGER, 1UL, key->qP, LTC_ASN1_EOL, 0UL, NULL); if (err != CRYPT_OK) { goto LBL_ERR; } key->type = PK_PRIVATE; err = CRYPT_OK; goto LBL_FREE2; LBL_ERR: rsa_free(key); LBL_FREE2: mp_clear_multi(iter, zero, NULL); XFREE(buf2); LBL_FREE1: XFREE(buf1); LBL_NOFREE: return err; } #endif /* LTC_MRSA */ /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */