pgcrypto update:
* openssl.c: Add 3des and AES support * README.pgcrypto: list only supported ciphers for openssl OpenSSL has pre-processor symbol OPENSSL_NO_AES, which isn't that helpful for detecting if it _does_ exist. Thus the hack with AES_ENCRYPT. Marko Kreen
This commit is contained in:
Neil Conway
parent
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commit
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@ -178,10 +178,9 @@ internal (default):
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Ciphers: Blowfish, Rijndael-128
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OpenSSL (0.9.6):
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OpenSSL (0.9.7):
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Hashes: MD5, SHA1, RIPEMD160, MD2
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Ciphers: DES, DESX, DES3, RC5, RC4, RC2, IDEA,
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Blowfish, CAST5
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Ciphers: Blowfish, AES, CAST5, DES, 3DES
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License: BSD-like with strong advertisement
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Url: http://www.openssl.org/
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@ -26,7 +26,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $PostgreSQL: pgsql/contrib/pgcrypto/openssl.c,v 1.16 2005/03/21 05:19:55 neilc Exp $
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* $PostgreSQL: pgsql/contrib/pgcrypto/openssl.c,v 1.17 2005/03/21 05:21:04 neilc Exp $
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*/
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#include <postgres.h>
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@ -35,6 +35,14 @@
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#include <openssl/evp.h>
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/*
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* Is OpenSSL compiled with AES?
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*/
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#undef GOT_AES
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#ifdef AES_ENCRYPT
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#define GOT_AES
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#endif
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/*
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* Hashes
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*/
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@ -165,7 +173,14 @@ typedef struct
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{
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des_key_schedule key_schedule;
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} des;
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struct
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{
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des_key_schedule k1, k2, k3;
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} des3;
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CAST_KEY cast_key;
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#ifdef GOT_AES
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AES_KEY aes_key;
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#endif
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} u;
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uint8 key[EVP_MAX_KEY_LENGTH];
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uint8 iv[EVP_MAX_IV_LENGTH];
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@ -362,6 +377,91 @@ ossl_des_cbc_decrypt(PX_Cipher * c, const uint8 *data, unsigned dlen,
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return 0;
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}
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/* DES3 */
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static int
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ossl_des3_init(PX_Cipher * c, const uint8 *key, unsigned klen, const uint8 *iv)
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{
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ossldata *od = c->ptr;
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des_cblock xkey1,
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xkey2,
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xkey3;
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memset(&xkey1, 0, sizeof(xkey1));
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memset(&xkey2, 0, sizeof(xkey2));
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memset(&xkey2, 0, sizeof(xkey2));
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memcpy(&xkey1, key, klen > 8 ? 8 : klen);
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if (klen > 8)
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memcpy(&xkey2, key + 8, (klen - 8) > 8 ? 8 : (klen - 8));
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if (klen > 16)
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memcpy(&xkey3, key + 16, (klen - 16) > 8 ? 8 : (klen - 16));
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DES_set_key(&xkey1, &od->u.des3.k1);
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DES_set_key(&xkey2, &od->u.des3.k2);
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DES_set_key(&xkey3, &od->u.des3.k3);
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memset(&xkey1, 0, sizeof(xkey1));
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memset(&xkey2, 0, sizeof(xkey2));
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memset(&xkey3, 0, sizeof(xkey3));
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if (iv)
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memcpy(od->iv, iv, 8);
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else
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memset(od->iv, 0, 8);
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return 0;
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}
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static int
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ossl_des3_ecb_encrypt(PX_Cipher * c, const uint8 *data, unsigned dlen,
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uint8 *res)
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{
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unsigned bs = gen_ossl_block_size(c);
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unsigned i;
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ossldata *od = c->ptr;
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for (i = 0; i < dlen / bs; i++)
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DES_ecb3_encrypt(data + i * bs, res + i * bs,
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&od->u.des3.k1, &od->u.des3.k2, &od->u.des3.k3, 1);
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return 0;
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}
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static int
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ossl_des3_ecb_decrypt(PX_Cipher * c, const uint8 *data, unsigned dlen,
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uint8 *res)
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{
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unsigned bs = gen_ossl_block_size(c);
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unsigned i;
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ossldata *od = c->ptr;
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for (i = 0; i < dlen / bs; i++)
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DES_ecb3_encrypt(data + i * bs, res + i * bs,
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&od->u.des3.k1, &od->u.des3.k2, &od->u.des3.k3, 0);
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return 0;
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}
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static int
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ossl_des3_cbc_encrypt(PX_Cipher * c, const uint8 *data, unsigned dlen,
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uint8 *res)
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{
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ossldata *od = c->ptr;
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DES_ede3_cbc_encrypt(data, res, dlen,
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&od->u.des3.k1, &od->u.des3.k2, &od->u.des3.k3,
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(des_cblock *) od->iv, 1);
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return 0;
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}
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static int
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ossl_des3_cbc_decrypt(PX_Cipher * c, const uint8 *data, unsigned dlen,
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uint8 *res)
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{
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ossldata *od = c->ptr;
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DES_ede3_cbc_encrypt(data, res, dlen,
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&od->u.des3.k1, &od->u.des3.k2, &od->u.des3.k3,
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(des_cblock *) od->iv, 0);
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return 0;
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}
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/* CAST5 */
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static int
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@ -420,6 +520,103 @@ ossl_cast_cbc_decrypt(PX_Cipher * c, const uint8 *data, unsigned dlen, uint8 *re
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return 0;
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}
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/* AES */
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#ifdef GOT_AES
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static int
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ossl_aes_init(PX_Cipher * c, const uint8 *key, unsigned klen, const uint8 *iv)
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{
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ossldata *od = c->ptr;
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unsigned bs = gen_ossl_block_size(c);
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if (klen <= 128/8)
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od->klen = 128/8;
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else if (klen <= 192/8)
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od->klen = 192/8;
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else if (klen <= 256/8)
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od->klen = 256/8;
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else
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return PXE_KEY_TOO_BIG;
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memcpy(od->key, key, klen);
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if (iv)
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memcpy(od->iv, iv, bs);
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else
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memset(od->iv, 0, bs);
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return 0;
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}
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static void
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ossl_aes_key_init(ossldata * od, int type)
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{
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if (type == AES_ENCRYPT)
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AES_set_encrypt_key(od->key, od->klen * 8, &od->u.aes_key);
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else
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AES_set_decrypt_key(od->key, od->klen * 8, &od->u.aes_key);
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od->init = 1;
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}
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static int
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ossl_aes_ecb_encrypt(PX_Cipher * c, const uint8 *data, unsigned dlen,
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uint8 *res)
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{
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unsigned bs = gen_ossl_block_size(c);
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ossldata *od = c->ptr;
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const uint8 *end = data + dlen - bs;
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if (!od->init)
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ossl_aes_key_init(od, AES_ENCRYPT);
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for (; data <= end; data += bs, res += bs)
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AES_ecb_encrypt(data, res, &od->u.aes_key, AES_ENCRYPT);
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return 0;
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}
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static int
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ossl_aes_ecb_decrypt(PX_Cipher * c, const uint8 *data, unsigned dlen,
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uint8 *res)
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{
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unsigned bs = gen_ossl_block_size(c);
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ossldata *od = c->ptr;
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const uint8 *end = data + dlen - bs;
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if (!od->init)
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ossl_aes_key_init(od, AES_DECRYPT);
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for (; data <= end; data += bs, res += bs)
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AES_ecb_encrypt(data, res, &od->u.aes_key, AES_DECRYPT);
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return 0;
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}
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static int
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ossl_aes_cbc_encrypt(PX_Cipher * c, const uint8 *data, unsigned dlen,
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uint8 *res)
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{
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ossldata *od = c->ptr;
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if (!od->init)
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ossl_aes_key_init(od, AES_ENCRYPT);
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AES_cbc_encrypt(data, res, dlen, &od->u.aes_key, od->iv, AES_ENCRYPT);
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return 0;
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}
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static int
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ossl_aes_cbc_decrypt(PX_Cipher * c, const uint8 *data, unsigned dlen,
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uint8 *res)
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{
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ossldata *od = c->ptr;
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if (!od->init)
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ossl_aes_key_init(od, AES_DECRYPT);
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AES_cbc_encrypt(data, res, dlen, &od->u.aes_key, od->iv, AES_DECRYPT);
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return 0;
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}
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#endif
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/*
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* aliases
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*/
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@ -431,7 +628,14 @@ static PX_Alias ossl_aliases[] = {
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{"blowfish-ecb", "bf-ecb"},
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{"blowfish-cfb", "bf-cfb"},
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{"des", "des-cbc"},
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{"3des", "des3-cbc"},
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{"3des-ecb", "des3-ecb"},
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{"3des-cbc", "des3-cbc"},
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{"cast5", "cast5-cbc"},
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{"aes", "aes-cbc"},
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{"rijndael", "aes-cbc"},
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{"rijndael-cbc", "aes-cbc"},
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{"rijndael-ecb", "aes-ecb"},
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{NULL}
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};
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@ -460,6 +664,16 @@ static const struct ossl_cipher ossl_des_cbc = {
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64 / 8, 64 / 8, 0
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};
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static const struct ossl_cipher ossl_des3_ecb = {
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ossl_des3_init, ossl_des3_ecb_encrypt, ossl_des3_ecb_decrypt,
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64 / 8, 192 / 8, 0
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};
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static const struct ossl_cipher ossl_des3_cbc = {
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ossl_des3_init, ossl_des3_cbc_encrypt, ossl_des3_cbc_decrypt,
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64 / 8, 192 / 8, 0
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};
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static const struct ossl_cipher ossl_cast_ecb = {
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ossl_cast_init, ossl_cast_ecb_encrypt, ossl_cast_ecb_decrypt,
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64 / 8, 128 / 8, 0
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@ -470,6 +684,18 @@ static const struct ossl_cipher ossl_cast_cbc = {
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64 / 8, 128 / 8, 0
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};
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#ifdef GOT_AES
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static const struct ossl_cipher ossl_aes_ecb = {
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ossl_aes_init, ossl_aes_ecb_encrypt, ossl_aes_ecb_decrypt,
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128 / 8, 256 / 8, 0
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};
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static const struct ossl_cipher ossl_aes_cbc = {
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ossl_aes_init, ossl_aes_cbc_encrypt, ossl_aes_cbc_decrypt,
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128 / 8, 256 / 8, 0
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};
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#endif
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/*
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* Special handlers
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*/
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@ -485,8 +711,14 @@ static const struct ossl_cipher_lookup ossl_cipher_types[] = {
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{"bf-cfb", &ossl_bf_cfb},
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{"des-ecb", &ossl_des_ecb},
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{"des-cbc", &ossl_des_cbc},
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{"des3-ecb", &ossl_des3_ecb},
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{"des3-cbc", &ossl_des3_cbc},
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{"cast5-ecb", &ossl_cast_ecb},
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{"cast5-cbc", &ossl_cast_cbc},
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#ifdef GOT_AES
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{"aes-ecb", &ossl_aes_ecb},
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{"aes-cbc", &ossl_aes_cbc},
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#endif
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{NULL}
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};
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