static int idea_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) { BLOCK_CIPHER_ecb_loop() idea_ecb_encrypt(in + i, out + i, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks); return 1; }
static int camellia_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx); if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS)) { int num = EVP_CIPHER_CTX_num(ctx); CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block); EVP_CIPHER_CTX_set_num(ctx, num); return 1; } while (len >= MAXBITCHUNK) { int num = EVP_CIPHER_CTX_num(ctx); CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block); len -= MAXBITCHUNK; EVP_CIPHER_CTX_set_num(ctx, num); } if (len) { int num = EVP_CIPHER_CTX_num(ctx); CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block); EVP_CIPHER_CTX_set_num(ctx, num); } return 1; }
static int aria_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { int ret; EVP_ARIA_CCM_CTX *cctx = EVP_C_DATA(EVP_ARIA_CCM_CTX,ctx); if (!iv && !key) return 1; if (key) { ret = aria_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, &cctx->ks.ks); CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, &cctx->ks, (block128_f) aria_encrypt); if (ret < 0) { EVPerr(EVP_F_ARIA_CCM_INIT_KEY,EVP_R_ARIA_KEY_SETUP_FAILED); return 0; } cctx->str = NULL; cctx->key_set = 1; } if (iv) { memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L); cctx->iv_set = 1; } return 1; }
static int zuc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { EVP_ZUC_KEY *dctx = EVP_C_DATA(EVP_ZUC_KEY, ctx); ZUC_set_key(&dctx->ks, key, iv); return 1; }
/* The subkey for Camellia is generated. */ static int camellia_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { int ret, mode; EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx); ret = Camellia_set_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, &dat->ks); if (ret < 0) { EVPerr(EVP_F_CAMELLIA_INIT_KEY, EVP_R_CAMELLIA_KEY_SETUP_FAILED); return 0; } mode = EVP_CIPHER_CTX_mode(ctx); if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) && !enc) { dat->block = (block128_f) Camellia_decrypt; dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? (cbc128_f) Camellia_cbc_encrypt : NULL; } else { dat->block = (block128_f) Camellia_encrypt; dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? (cbc128_f) Camellia_cbc_encrypt : NULL; } return 1; }
static int sms4_gcm_cleanup(EVP_CIPHER_CTX *c) { EVP_SMS4_GCM_CTX *gctx = EVP_C_DATA(EVP_SMS4_GCM_CTX,c); OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm)); if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c)) OPENSSL_free(gctx->iv); return 1; }
static int aria_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { EVP_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX,ctx); int rv = -1; /* Encrypt/decrypt must be performed in place */ if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN)) return -1; /* * Set IV from start of buffer or generate IV and write to start of * buffer. */ if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CIPHER_CTX_encrypting(ctx) ? EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV, EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) goto err; /* Use saved AAD */ if (CRYPTO_gcm128_aad(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx), gctx->tls_aad_len)) goto err; /* Fix buffer and length to point to payload */ in += EVP_GCM_TLS_EXPLICIT_IV_LEN; out += EVP_GCM_TLS_EXPLICIT_IV_LEN; len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; if (EVP_CIPHER_CTX_encrypting(ctx)) { /* Encrypt payload */ if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len)) goto err; out += len; /* Finally write tag */ CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN); rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; } else { /* Decrypt */ if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len)) goto err; /* Retrieve tag */ CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx), EVP_GCM_TLS_TAG_LEN); /* If tag mismatch wipe buffer */ if (CRYPTO_memcmp(EVP_CIPHER_CTX_buf_noconst(ctx), in + len, EVP_GCM_TLS_TAG_LEN)) { OPENSSL_cleanse(out, len); goto err; } rv = len; } err: gctx->iv_set = 0; gctx->tls_aad_len = -1; return rv; }
static int sms4_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inlen) { EVP_SMS4_WRAP_CTX *wctx = EVP_C_DATA(EVP_SMS4_WRAP_CTX,ctx); size_t rv; /* SMS4 wrap with padding has IV length of 4, without padding 8 */ int pad = EVP_CIPHER_CTX_iv_length(ctx) == 4; /* No final operation so always return zero length */ if (!in) return 0; /* Input length must always be non-zero */ if (!inlen) return -1; /* If decrypting need at least 16 bytes and multiple of 8 */ if (!EVP_CIPHER_CTX_encrypting(ctx) && (inlen < 16 || inlen & 0x7)) return -1; /* If not padding input must be multiple of 8 */ if (!pad && inlen & 0x7) return -1; if (!out) { if (EVP_CIPHER_CTX_encrypting(ctx)) { /* If padding round up to multiple of 8 */ if (pad) inlen = (inlen + 7) / 8 * 8; /* 8 byte prefix */ return inlen + 8; } else { /* * If not padding output will be exactly 8 bytes smaller than * input. If padding it will be at least 8 bytes smaller but we * don't know how much. */ return inlen - 8; } } if (pad) { if (EVP_CIPHER_CTX_encrypting(ctx)) rv = CRYPTO_128_wrap_pad(&wctx->ks.ks, wctx->iv, out, in, inlen, (block128_f)sms4_encrypt); else rv = CRYPTO_128_unwrap_pad(&wctx->ks.ks, wctx->iv, out, in, inlen, (block128_f)sms4_encrypt); } else { if (EVP_CIPHER_CTX_encrypting(ctx)) rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv, out, in, inlen, (block128_f)sms4_encrypt); else rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv, out, in, inlen, (block128_f)sms4_encrypt); } return rv ? (int)rv : -1; }
static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { if (!enc) { if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE) enc = 1; else if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CFB_MODE) enc = 1; } if (enc) idea_set_encrypt_key(key, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks); else { IDEA_KEY_SCHEDULE tmp; idea_set_encrypt_key(key, &tmp); idea_set_decrypt_key(&tmp, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks); OPENSSL_cleanse((unsigned char *)&tmp, sizeof(IDEA_KEY_SCHEDULE)); } return 1; }
static int camellia_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx); int num = EVP_CIPHER_CTX_num(ctx); CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block); EVP_CIPHER_CTX_set_num(ctx, num); return 1; }
static int aria_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { unsigned int num = EVP_CIPHER_CTX_num(ctx); EVP_ARIA_KEY *dat = EVP_C_DATA(EVP_ARIA_KEY,ctx); CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_buf_noconst(ctx), &num, (block128_f) aria_encrypt); EVP_CIPHER_CTX_set_num(ctx, num); return 1; }
static int camellia_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { size_t bl = EVP_CIPHER_CTX_block_size(ctx); size_t i; EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx); if (len < bl) return 1; for (i = 0, len -= bl; i <= len; i += bl) (*dat->block) (in + i, out + i, &dat->ks); return 1; }
static int sms4_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { EVP_SMS4_CCM_CTX *cctx = EVP_C_DATA(EVP_SMS4_CCM_CTX,ctx); CCM128_CONTEXT *ccm = &cctx->ccm; /* Encrypt/decrypt must be performed in place */ if (out != in || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->M)) return -1; /* If encrypting set explicit IV from sequence number (start of AAD) */ if (EVP_CIPHER_CTX_encrypting(ctx)) memcpy(out, EVP_CIPHER_CTX_buf_noconst(ctx), EVP_CCM_TLS_EXPLICIT_IV_LEN); /* Get rest of IV from explicit IV */ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx) + EVP_CCM_TLS_FIXED_IV_LEN, in, EVP_CCM_TLS_EXPLICIT_IV_LEN); /* Correct length value */ len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M; if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), 15 - cctx->L, len)) return -1; /* Use saved AAD */ CRYPTO_ccm128_aad(ccm, EVP_CIPHER_CTX_buf_noconst(ctx), cctx->tls_aad_len); /* Fix buffer to point to payload */ in += EVP_CCM_TLS_EXPLICIT_IV_LEN; out += EVP_CCM_TLS_EXPLICIT_IV_LEN; if (EVP_CIPHER_CTX_encrypting(ctx)) { if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, cctx->str) : CRYPTO_ccm128_encrypt(ccm, in, out, len)) return -1; if (!CRYPTO_ccm128_tag(ccm, out + len, cctx->M)) return -1; return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M; } else { if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, cctx->str) : !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { unsigned char tag[16]; if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { if (!CRYPTO_memcmp(tag, in + len, cctx->M)) return len; } } OPENSSL_cleanse(out, len); return -1; } }
static int sms4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { int mode; EVP_SMS4_KEY *dat = EVP_C_DATA(EVP_SMS4_KEY, ctx); mode = EVP_CIPHER_CTX_mode(ctx); if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) && !enc) { sms4_set_decrypt_key(&dat->ks, key); } else { sms4_set_encrypt_key(&dat->ks, key); } dat->block = (block128_f)sms4_encrypt; dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? (cbc128_f) sms4_cbc_encrypt : NULL; return 1; }
static int camellia_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx); if (dat->stream.cbc) (*dat->stream.cbc) (in, out, len, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx)); else if (EVP_CIPHER_CTX_encrypting(ctx)) CRYPTO_cbc128_encrypt(in, out, len, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx), dat->block); else CRYPTO_cbc128_decrypt(in, out, len, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx), dat->block); return 1; }
static int aria_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { EVP_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX,ctx); /* If not set up, return error */ if (!gctx->key_set) return -1; if (gctx->tls_aad_len >= 0) return aria_gcm_tls_cipher(ctx, out, in, len); if (!gctx->iv_set) return -1; if (in) { if (out == NULL) { if (CRYPTO_gcm128_aad(&gctx->gcm, in, len)) return -1; } else if (EVP_CIPHER_CTX_encrypting(ctx)) { if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len)) return -1; } else { if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len)) return -1; } return len; } if (!EVP_CIPHER_CTX_encrypting(ctx)) { if (gctx->taglen < 0) return -1; if (CRYPTO_gcm128_finish(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx), gctx->taglen) != 0) return -1; gctx->iv_set = 0; return 0; } CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx), 16); gctx->taglen = 16; /* Don't reuse the IV */ gctx->iv_set = 0; return 0; }
static int camellia_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { unsigned int num = EVP_CIPHER_CTX_num(ctx); EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx); if (dat->stream.ctr) CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_buf_noconst(ctx), &num, dat->stream.ctr); else CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_buf_noconst(ctx), &num, dat->block); EVP_CIPHER_CTX_set_num(ctx, num); return 1; }
static int sms4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { EVP_SMS4_CCM_CTX *cctx = EVP_C_DATA(EVP_SMS4_CCM_CTX,ctx); if (!iv && !key) return 1; if (key) do { sms4_set_encrypt_key(&cctx->ks.ks, key); CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, &cctx->ks, (block128_f) sms4_encrypt); cctx->str = NULL; cctx->key_set = 1; } while (0); if (iv) { memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L); cctx->iv_set = 1; } return 1; }
static int sms4_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { EVP_SMS4_WRAP_CTX *wctx = EVP_C_DATA(EVP_SMS4_WRAP_CTX,ctx); if (!iv && !key) return 1; if (key) { if (EVP_CIPHER_CTX_encrypting(ctx)) sms4_set_encrypt_key(&wctx->ks.ks, key); else sms4_set_decrypt_key(&wctx->ks.ks, key); if (!iv) wctx->iv = NULL; } if (iv) { memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, EVP_CIPHER_CTX_iv_length(ctx)); wctx->iv = EVP_CIPHER_CTX_iv_noconst(ctx); } return 1; }
static int zuc_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { EVP_ZUC_KEY *dctx = EVP_C_DATA(EVP_ZUC_KEY, ctx); unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx); unsigned int n = EVP_CIPHER_CTX_num(ctx); size_t l = 0; while (l < len) { if (n == 0) { ZUC_generate_keystream(&dctx->ks, 4, (uint32_t *)buf); } out[l] = in[l] ^ buf[n]; ++l; n = (n + 1) % 16; } EVP_CIPHER_CTX_set_num(ctx, n); return 1; }
static int aria_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { int ret; EVP_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX,ctx); if (!iv && !key) return 1; if (key) { ret = aria_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, &gctx->ks.ks); CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) aria_encrypt); if (ret < 0) { EVPerr(EVP_F_ARIA_GCM_INIT_KEY,EVP_R_ARIA_KEY_SETUP_FAILED); return 0; } /* * If we have an iv can set it directly, otherwise use saved IV. */ if (iv == NULL && gctx->iv_set) iv = gctx->iv; if (iv) { CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); gctx->iv_set = 1; } gctx->key_set = 1; } else { /* If key set use IV, otherwise copy */ if (gctx->key_set) CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); else memcpy(gctx->iv, iv, gctx->ivlen); gctx->iv_set = 1; gctx->iv_gen = 0; } return 1; }
static int sms4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { EVP_SMS4_GCM_CTX *gctx = EVP_C_DATA(EVP_SMS4_GCM_CTX,ctx); if (!iv && !key) return 1; if (key) { do { (void)0; /* terminate potentially open 'else' */ sms4_set_encrypt_key(&gctx->ks.ks, key); CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)sms4_encrypt); gctx->ctr = NULL; } while (0); /* * If we have an iv can set it directly, otherwise use saved IV. */ if (iv == NULL && gctx->iv_set) iv = gctx->iv; if (iv) { CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); gctx->iv_set = 1; } gctx->key_set = 1; } else { /* If key set use IV, otherwise copy */ if (gctx->key_set) CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); else memcpy(gctx->iv, iv, gctx->ivlen); gctx->iv_set = 1; gctx->iv_gen = 0; } return 1; }
static int sms4_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) { EVP_SMS4_GCM_CTX *gctx = EVP_C_DATA(EVP_SMS4_GCM_CTX,c); switch (type) { case EVP_CTRL_INIT: gctx->key_set = 0; gctx->iv_set = 0; gctx->ivlen = EVP_CIPHER_CTX_iv_length(c); gctx->iv = EVP_CIPHER_CTX_iv_noconst(c); gctx->taglen = -1; gctx->iv_gen = 0; gctx->tls_aad_len = -1; return 1; case EVP_CTRL_AEAD_SET_IVLEN: if (arg <= 0) return 0; /* Allocate memory for IV if needed */ if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) { if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c)) OPENSSL_free(gctx->iv); gctx->iv = OPENSSL_malloc(arg); if (gctx->iv == NULL) return 0; } gctx->ivlen = arg; return 1; case EVP_CTRL_AEAD_SET_TAG: if (arg <= 0 || arg > 16 || EVP_CIPHER_CTX_encrypting(c)) return 0; memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg); gctx->taglen = arg; return 1; case EVP_CTRL_AEAD_GET_TAG: if (arg <= 0 || arg > 16 || !EVP_CIPHER_CTX_encrypting(c) || gctx->taglen < 0) return 0; memcpy(ptr, EVP_CIPHER_CTX_buf_noconst(c), arg); return 1; case EVP_CTRL_GCM_SET_IV_FIXED: /* Special case: -1 length restores whole IV */ if (arg == -1) { memcpy(gctx->iv, ptr, gctx->ivlen); gctx->iv_gen = 1; return 1; } /* * Fixed field must be at least 4 bytes and invocation field at least * 8. */ if ((arg < 4) || (gctx->ivlen - arg) < 8) return 0; if (arg) memcpy(gctx->iv, ptr, arg); if (EVP_CIPHER_CTX_encrypting(c) && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0) return 0; gctx->iv_gen = 1; return 1; case EVP_CTRL_GCM_IV_GEN: if (gctx->iv_gen == 0 || gctx->key_set == 0) return 0; CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); if (arg <= 0 || arg > gctx->ivlen) arg = gctx->ivlen; memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg); /* * Invocation field will be at least 8 bytes in size and so no need * to check wrap around or increment more than last 8 bytes. */ ctr64_inc(gctx->iv + gctx->ivlen - 8); gctx->iv_set = 1; return 1; case EVP_CTRL_GCM_SET_IV_INV: if (gctx->iv_gen == 0 || gctx->key_set == 0 || EVP_CIPHER_CTX_encrypting(c)) return 0; memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg); CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); gctx->iv_set = 1; return 1; case EVP_CTRL_AEAD_TLS1_AAD: /* Save the AAD for later use */ if (arg != EVP_AEAD_TLS1_AAD_LEN) return 0; memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg); gctx->tls_aad_len = arg; { unsigned int len = EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1]; /* Correct length for explicit IV */ len -= EVP_GCM_TLS_EXPLICIT_IV_LEN; /* If decrypting correct for tag too */ if (!EVP_CIPHER_CTX_encrypting(c)) len -= EVP_GCM_TLS_TAG_LEN; EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8; EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff; } /* Extra padding: tag appended to record */ return EVP_GCM_TLS_TAG_LEN; case EVP_CTRL_COPY: { EVP_CIPHER_CTX *out = ptr; EVP_SMS4_GCM_CTX *gctx_out = EVP_C_DATA(EVP_SMS4_GCM_CTX,out); if (gctx->gcm.key) { if (gctx->gcm.key != &gctx->ks) return 0; gctx_out->gcm.key = &gctx_out->ks; } if (gctx->iv == EVP_CIPHER_CTX_iv_noconst(c)) gctx_out->iv = EVP_CIPHER_CTX_iv_noconst(out); else { gctx_out->iv = OPENSSL_malloc(gctx->ivlen); if (gctx_out->iv == NULL) return 0; memcpy(gctx_out->iv, gctx->iv, gctx->ivlen); } return 1; } default: return -1; } }
static int sms4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { EVP_SMS4_CCM_CTX *cctx = EVP_C_DATA(EVP_SMS4_CCM_CTX,ctx); CCM128_CONTEXT *ccm = &cctx->ccm; /* If not set up, return error */ if (!cctx->key_set) return -1; if (cctx->tls_aad_len >= 0) return sms4_ccm_tls_cipher(ctx, out, in, len); if (!cctx->iv_set) return -1; if (!EVP_CIPHER_CTX_encrypting(ctx) && !cctx->tag_set) return -1; if (!out) { if (!in) { if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), 15 - cctx->L, len)) return -1; cctx->len_set = 1; return len; } /* If have AAD need message length */ if (!cctx->len_set && len) return -1; CRYPTO_ccm128_aad(ccm, in, len); return len; } /* EVP_*Final() doesn't return any data */ if (!in) return 0; /* If not set length yet do it */ if (!cctx->len_set) { if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), 15 - cctx->L, len)) return -1; cctx->len_set = 1; } if (EVP_CIPHER_CTX_encrypting(ctx)) { if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, cctx->str) : CRYPTO_ccm128_encrypt(ccm, in, out, len)) return -1; cctx->tag_set = 1; return len; } else { int rv = -1; if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, cctx->str) : !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { unsigned char tag[16]; if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { if (!CRYPTO_memcmp(tag, EVP_CIPHER_CTX_buf_noconst(ctx), cctx->M)) rv = len; } } if (rv == -1) OPENSSL_cleanse(out, len); cctx->iv_set = 0; cctx->tag_set = 0; cctx->len_set = 0; return rv; } }
static int sms4_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) { EVP_SMS4_CCM_CTX *cctx = EVP_C_DATA(EVP_SMS4_CCM_CTX,c); switch (type) { case EVP_CTRL_INIT: cctx->key_set = 0; cctx->iv_set = 0; cctx->L = 8; cctx->M = 12; cctx->tag_set = 0; cctx->len_set = 0; cctx->tls_aad_len = -1; return 1; case EVP_CTRL_AEAD_TLS1_AAD: /* Save the AAD for later use */ if (arg != EVP_AEAD_TLS1_AAD_LEN) return 0; memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg); cctx->tls_aad_len = arg; { uint16_t len = EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1]; /* Correct length for explicit IV */ len -= EVP_CCM_TLS_EXPLICIT_IV_LEN; /* If decrypting correct for tag too */ if (!EVP_CIPHER_CTX_encrypting(c)) len -= cctx->M; EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8; EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff; } /* Extra padding: tag appended to record */ return cctx->M; case EVP_CTRL_CCM_SET_IV_FIXED: /* Sanity check length */ if (arg != EVP_CCM_TLS_FIXED_IV_LEN) return 0; /* Just copy to first part of IV */ memcpy(EVP_CIPHER_CTX_iv_noconst(c), ptr, arg); return 1; case EVP_CTRL_AEAD_SET_IVLEN: arg = 15 - arg; case EVP_CTRL_CCM_SET_L: if (arg < 2 || arg > 8) return 0; cctx->L = arg; return 1; case EVP_CTRL_AEAD_SET_TAG: if ((arg & 1) || arg < 4 || arg > 16) return 0; if (EVP_CIPHER_CTX_encrypting(c) && ptr) return 0; if (ptr) { cctx->tag_set = 1; memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg); } cctx->M = arg; return 1; case EVP_CTRL_AEAD_GET_TAG: if (!EVP_CIPHER_CTX_encrypting(c) || !cctx->tag_set) return 0; if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg)) return 0; cctx->tag_set = 0; cctx->iv_set = 0; cctx->len_set = 0; return 1; case EVP_CTRL_COPY: { EVP_CIPHER_CTX *out = ptr; EVP_SMS4_CCM_CTX *cctx_out = EVP_C_DATA(EVP_SMS4_CCM_CTX,out); if (cctx->ccm.key) { if (cctx->ccm.key != &cctx->ks) return 0; cctx_out->ccm.key = &cctx_out->ks; } return 1; } default: return -1; } }
static int seed_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { SEED_set_key(key, &EVP_C_DATA(EVP_SEED_KEY,ctx)->ks); return 1; }