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c5e067fb0b
fix https://github.com/ossrs/srs/issues/3155 Build srt-1-fit fails with `standard attributes in middle of decl-specifiers` on GCC 12,Arch Linux. See https://github.com/Haivision/srt/releases/tag/v1.5.3
245 lines
8.7 KiB
C
245 lines
8.7 KiB
C
/*
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* SRT - Secure, Reliable, Transport
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* Copyright (c) 2019 Haivision Systems Inc.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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*/
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/*****************************************************************************
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written by
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Haivision Systems Inc.
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2022-05-19 (jdube)
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CRYSPR2 adaptation
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2019-06-26 (jdube)
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OpenSSL Direct AES CRYSPR/4SRT (CRYypto Service PRovider for SRT).
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*****************************************************************************/
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#include "hcrypt.h"
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#include <string.h>
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typedef struct tag_crysprOpenSSL_AES_cb {
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CRYSPR_cb ccb;
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/* Add cryptolib specific data here */
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#ifdef CRYSPR2
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CRYSPR_AESCTX aes_kek_buf; /* Key Encrypting Key (KEK) */
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CRYSPR_AESCTX aes_sek_buf[2]; /* even/odd Stream Encrypting Key (SEK) */
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#endif
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} crysprOpenSSL_cb;
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int crysprOpenSSL_Prng(unsigned char *rn, int len)
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{
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return(RAND_bytes(rn, len) <= 0 ? -1 : 0);
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}
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int crysprOpenSSL_AES_SetKey(
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int cipher_type, /* One of HCRYPT_CTX_MODE_[CLRTXT|AESECB|AESCTR] */
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bool bEncrypt, /* true Enxcrypt key, false: decrypt */
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const unsigned char *kstr, /* key sttring*/
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size_t kstr_len, /* kstr len in bytes (16, 24, or 32 bytes (for AES128,AES192, or AES256) */
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CRYSPR_AESCTX *aes_key) /* CRYpto Service PRovider AES Key context */
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{
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(void)cipher_type;
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if (bEncrypt) { /* Encrypt key */
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if (AES_set_encrypt_key(kstr, (int)(kstr_len * 8), aes_key)) {
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HCRYPT_LOG(LOG_ERR, "%s", "AES_set_encrypt_key(kek) failed\n");
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return(-1);
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}
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} else { /* Decrypt key */
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if (AES_set_decrypt_key(kstr, (int)(kstr_len * 8), aes_key)) {
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HCRYPT_LOG(LOG_ERR, "%s", "AES_set_decrypt_key(kek) failed\n");
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return(-1);
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}
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}
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return(0);
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}
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#if !(CRYSPR_HAS_AESCTR && CRYSPR_HAS_AESKWRAP)
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int crysprOpenSSL_AES_EcbCipher(
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bool bEncrypt, /* true:encrypt, false:decrypt */
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CRYSPR_AESCTX *aes_key, /* CRYpto Service PRovider AES Key context */
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const unsigned char *indata,/* src (clear text if encrypt, cipher text otherwise)*/
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size_t inlen, /* indata length */
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unsigned char *out_txt, /* dst (cipher text if encrypt, clear text otherwise) */
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size_t *outlen) /* in/out dst len */
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{
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int nblk = inlen/CRYSPR_AESBLKSZ;
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int nmore = inlen%CRYSPR_AESBLKSZ;
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size_t outsiz = (outlen ? *outlen : 0);
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int i;
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if (outsiz % CRYSPR_AESBLKSZ) return(-1); /* output buf size must be a multiple of AES block size (16) */
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if (bEncrypt) {
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if (outsiz > 16 && outsiz < (nblk+nmore)*CRYSPR_AESBLKSZ) return(-1); /* output buf size must have room for PKCS7 padding */
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/* Encrypt packet payload, block by block, in output buffer */
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for (i=0; i<nblk; i++){
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AES_ecb_encrypt(&indata[(i*CRYSPR_AESBLKSZ)],
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&out_txt[(i*CRYSPR_AESBLKSZ)], aes_key, AES_ENCRYPT);
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}
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/* Encrypt last incomplete block */
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if (0 < nmore) {
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unsigned char intxt[CRYSPR_AESBLKSZ];
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/* PKCS7 padding: padding value is number of bytes padded */
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memcpy(intxt, &indata[(nblk*CRYSPR_AESBLKSZ)], nmore);
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memset(intxt+nmore, CRYSPR_AESBLKSZ-nmore, CRYSPR_AESBLKSZ-nmore);
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AES_ecb_encrypt(intxt, &out_txt[(nblk*CRYSPR_AESBLKSZ)], aes_key, AES_ENCRYPT);
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nblk++;
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}
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if (outlen != NULL) *outlen = nblk*CRYSPR_AESBLKSZ;
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} else { /* Decrypt */
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for (i=0; i<nblk; i++){
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AES_ecb_encrypt(&indata[(i*CRYSPR_AESBLKSZ)],
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&out_txt[(i*CRYSPR_AESBLKSZ)], aes_key, AES_DECRYPT);
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}
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/* Encrypt last incomplete block */
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if (0 < nmore) {
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//shall not happens in decrypt
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}
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if (outlen != NULL) *outlen = nblk*CRYSPR_AESBLKSZ;
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}
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return 0;
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}
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#endif /* !(CRYSPR_HAS_AESCTR && CRYSPR_HAS_AESKWRAP) */
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int crysprOpenSSL_AES_CtrCipher(
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bool bEncrypt, /* true:encrypt, false:decrypt */
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CRYSPR_AESCTX *aes_key, /* CRYpto Service PRovider AES Key context */
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unsigned char *iv, /* iv */
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const unsigned char *indata,/* src */
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size_t inlen, /* length */
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unsigned char *out_txt) /* dest */
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{
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unsigned char ctr[CRYSPR_AESBLKSZ];
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unsigned blk_ofs = 0;
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(void)bEncrypt; /* CTR mode encrypt for both encryption and decryption */
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memset(&ctr[0], 0, sizeof(ctr));
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#if (OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(OPENSSL_IS_BORINGSSL))
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CRYPTO_ctr128_encrypt(indata, out_txt,
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inlen, aes_key, iv, ctr, &blk_ofs, (block128_f) AES_encrypt);
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#else
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AES_ctr128_encrypt(indata, out_txt,
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inlen, aes_key, iv, ctr, &blk_ofs);
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#endif
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return 0;
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}
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#ifdef CRYSPR2
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static CRYSPR_cb *crysprOpenSSL_Open(CRYSPR_methods *cryspr, size_t max_len)
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{
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crysprOpenSSL_cb *aes_data;
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aes_data = (crysprOpenSSL_cb *)crysprHelper_Open(cryspr, sizeof(crysprOpenSSL_cb), max_len);
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if (NULL == aes_data) {
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HCRYPT_LOG(LOG_ERR, "crysprHelper_Open(%p, %zd, %zd) failed\n", cryspr, sizeof(crysprOpenSSL_cb), max_len);
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return(NULL);
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}
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aes_data->ccb.aes_kek = &aes_data->aes_kek_buf; //key encrypting key
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aes_data->ccb.aes_sek[0] = &aes_data->aes_sek_buf[0]; //stream encrypting key
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aes_data->ccb.aes_sek[1] = &aes_data->aes_sek_buf[1]; //stream encrypting key
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return(&aes_data->ccb);
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}
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#endif /* CRYSPR2 */
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/*
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* Password-based Key Derivation Function
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*/
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int crysprOpenSSL_KmPbkdf2(
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CRYSPR_cb *cryspr_cb,
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char *passwd, /* passphrase */
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size_t passwd_len, /* passphrase len */
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unsigned char *salt, /* salt */
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size_t salt_len, /* salt_len */
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int itr, /* iterations */
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size_t key_len, /* key_len */
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unsigned char *out) /* derived key */
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{
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(void)cryspr_cb;
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int rc = PKCS5_PBKDF2_HMAC_SHA1(passwd,(int)passwd_len,salt,(int)salt_len,itr,(int)key_len,out);
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return(rc == 1? 0 : -1);
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}
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#if CRYSPR_HAS_AESKWRAP
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int crysprOpenSSL_KmWrap(CRYSPR_cb *cryspr_cb,
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unsigned char *wrap,
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const unsigned char *sek,
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unsigned int seklen)
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{
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AES_KEY *kek = CRYSPR_GETKEK(cryspr_cb); //key encrypting key
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return(((seklen + HAICRYPT_WRAPKEY_SIGN_SZ) == (unsigned int)AES_wrap_key(kek, NULL, wrap, sek, seklen)) ? 0 : -1);
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}
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int crysprOpenSSL_KmUnwrap(
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CRYSPR_cb *cryspr_cb,
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unsigned char *sek, //Stream encrypting key
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const unsigned char *wrap,
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unsigned int wraplen)
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{
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AES_KEY *kek = CRYSPR_GETKEK(cryspr_cb); //key encrypting key
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return(((wraplen - HAICRYPT_WRAPKEY_SIGN_SZ) == (unsigned int)AES_unwrap_key(kek, NULL, sek, wrap, wraplen)) ? 0 : -1);
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}
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#endif /*CRYSPR_HAS_AESKWRAP*/
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static CRYSPR_methods crysprOpenSSL_methods;
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CRYSPR_methods *crysprOpenSSL(void)
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{
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if(NULL == crysprOpenSSL_methods.open) {
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crysprInit(&crysprOpenSSL_methods); //Default/fallback methods
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crysprOpenSSL_methods.prng = crysprOpenSSL_Prng;
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//--CryptoLib Primitive API-----------------------------------------------
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crysprOpenSSL_methods.aes_set_key = crysprOpenSSL_AES_SetKey;
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#if CRYSPR_HAS_AESCTR
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crysprOpenSSL_methods.aes_ctr_cipher = crysprOpenSSL_AES_CtrCipher;
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#endif
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#if !(CRYSPR_HAS_AESCTR && CRYSPR_HAS_AESKWRAP)
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/* AES-ECB only required if cryspr has no AES-CTR and no AES KeyWrap */
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/* OpenSSL has both AESCTR and AESKWRP and the AESECB wrapper is only used
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to test the falback methods */
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crysprOpenSSL_methods.aes_ecb_cipher = crysprOpenSSL_AES_EcbCipher;
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#endif
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#if !CRYSPR_HAS_PBKDF2
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crysprOpenSSL_methods.sha1_msg_digest= NULL; //Required to use eventual default/fallback KmPbkdf2
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#endif
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//--Crypto Session API-----------------------------------------
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#ifdef CRYSPR2
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crysprOpenSSL_methods.open = crysprOpenSSL_Open;
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#else
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// crysprOpenSSL_methods.open =
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#endif
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// crysprOpenSSL_methods.close =
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//--Keying material (km) encryption
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#if CRYSPR_HAS_PBKDF2
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crysprOpenSSL_methods.km_pbkdf2 = crysprOpenSSL_KmPbkdf2;
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#else
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#error There is no default/fallback method for PBKDF2
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#endif
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// crysprOpenSSL_methods.km_setkey =
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#if CRYSPR_HAS_AESKWRAP
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crysprOpenSSL_methods.km_wrap = crysprOpenSSL_KmWrap;
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crysprOpenSSL_methods.km_unwrap = crysprOpenSSL_KmUnwrap;
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#endif
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//--Media stream (ms) encryption
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// crysprOpenSSL_methods.ms_setkey =
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// crysprOpenSSL_methods.ms_encrypt =
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// crysprOpenSSL_methods.ms_decrypt =
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}
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return(&crysprOpenSSL_methods);
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}
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