/* * Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved. * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. * * Licensed under the Apache License 2.0 (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #include "internal/deprecated.h" #include "internal/cryptlib.h" #ifndef OPENSSL_NO_ARIA # include # include # include # include "crypto/aria.h" # include "crypto/evp.h" # include "crypto/modes.h" # include "evp_local.h" /* ARIA subkey Structure */ typedef struct { ARIA_KEY ks; } EVP_ARIA_KEY; /* ARIA GCM context */ typedef struct { union { OSSL_UNION_ALIGN; ARIA_KEY ks; } ks; /* ARIA subkey to use */ int key_set; /* Set if key initialised */ int iv_set; /* Set if an iv is set */ GCM128_CONTEXT gcm; unsigned char *iv; /* Temporary IV store */ int ivlen; /* IV length */ int taglen; int iv_gen; /* It is OK to generate IVs */ int tls_aad_len; /* TLS AAD length */ } EVP_ARIA_GCM_CTX; /* ARIA CCM context */ typedef struct { union { OSSL_UNION_ALIGN; ARIA_KEY ks; } ks; /* ARIA key schedule to use */ int key_set; /* Set if key initialised */ int iv_set; /* Set if an iv is set */ int tag_set; /* Set if tag is valid */ int len_set; /* Set if message length set */ int L, M; /* L and M parameters from RFC3610 */ int tls_aad_len; /* TLS AAD length */ CCM128_CONTEXT ccm; ccm128_f str; } EVP_ARIA_CCM_CTX; /* The subkey for ARIA is generated. */ static int aria_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { int ret; int mode = EVP_CIPHER_CTX_get_mode(ctx); if (enc || (mode != EVP_CIPH_ECB_MODE && mode != EVP_CIPH_CBC_MODE)) ret = ossl_aria_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, EVP_CIPHER_CTX_get_cipher_data(ctx)); else ret = ossl_aria_set_decrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, EVP_CIPHER_CTX_get_cipher_data(ctx)); if (ret < 0) { ERR_raise(ERR_LIB_EVP, EVP_R_ARIA_KEY_SETUP_FAILED); return 0; } return 1; } static void aria_cbc_encrypt(const unsigned char *in, unsigned char *out, size_t len, const ARIA_KEY *key, unsigned char *ivec, const int enc) { if (enc) CRYPTO_cbc128_encrypt(in, out, len, key, ivec, (block128_f) ossl_aria_encrypt); else CRYPTO_cbc128_decrypt(in, out, len, key, ivec, (block128_f) ossl_aria_encrypt); } static void aria_cfb128_encrypt(const unsigned char *in, unsigned char *out, size_t length, const ARIA_KEY *key, unsigned char *ivec, int *num, const int enc) { CRYPTO_cfb128_encrypt(in, out, length, key, ivec, num, enc, (block128_f) ossl_aria_encrypt); } static void aria_cfb1_encrypt(const unsigned char *in, unsigned char *out, size_t length, const ARIA_KEY *key, unsigned char *ivec, int *num, const int enc) { CRYPTO_cfb128_1_encrypt(in, out, length, key, ivec, num, enc, (block128_f) ossl_aria_encrypt); } static void aria_cfb8_encrypt(const unsigned char *in, unsigned char *out, size_t length, const ARIA_KEY *key, unsigned char *ivec, int *num, const int enc) { CRYPTO_cfb128_8_encrypt(in, out, length, key, ivec, num, enc, (block128_f) ossl_aria_encrypt); } static void aria_ecb_encrypt(const unsigned char *in, unsigned char *out, const ARIA_KEY *key, const int enc) { ossl_aria_encrypt(in, out, key); } static void aria_ofb128_encrypt(const unsigned char *in, unsigned char *out, size_t length, const ARIA_KEY *key, unsigned char *ivec, int *num) { CRYPTO_ofb128_encrypt(in, out, length, key, ivec, num, (block128_f) ossl_aria_encrypt); } IMPLEMENT_BLOCK_CIPHER(aria_128, ks, aria, EVP_ARIA_KEY, NID_aria_128, 16, 16, 16, 128, 0, aria_init_key, NULL, EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL) IMPLEMENT_BLOCK_CIPHER(aria_192, ks, aria, EVP_ARIA_KEY, NID_aria_192, 16, 24, 16, 128, 0, aria_init_key, NULL, EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL) IMPLEMENT_BLOCK_CIPHER(aria_256, ks, aria, EVP_ARIA_KEY, NID_aria_256, 16, 32, 16, 128, 0, aria_init_key, NULL, EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL) # define IMPLEMENT_ARIA_CFBR(ksize,cbits) \ IMPLEMENT_CFBR(aria,aria,EVP_ARIA_KEY,ks,ksize,cbits,16,0) IMPLEMENT_ARIA_CFBR(128,1) IMPLEMENT_ARIA_CFBR(192,1) IMPLEMENT_ARIA_CFBR(256,1) IMPLEMENT_ARIA_CFBR(128,8) IMPLEMENT_ARIA_CFBR(192,8) IMPLEMENT_ARIA_CFBR(256,8) # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ static const EVP_CIPHER aria_##keylen##_##mode = { \ nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ flags|EVP_CIPH_##MODE##_MODE, \ EVP_ORIG_GLOBAL, \ aria_init_key, \ aria_##mode##_cipher, \ NULL, \ sizeof(EVP_ARIA_KEY), \ NULL,NULL,NULL,NULL }; \ const EVP_CIPHER *EVP_aria_##keylen##_##mode(void) \ { return &aria_##keylen##_##mode; } static int aria_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { int n = EVP_CIPHER_CTX_get_num(ctx); unsigned int num; EVP_ARIA_KEY *dat = EVP_C_DATA(EVP_ARIA_KEY, ctx); if (n < 0) return 0; num = (unsigned int)n; CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, ctx->iv, EVP_CIPHER_CTX_buf_noconst(ctx), &num, (block128_f) ossl_aria_encrypt); EVP_CIPHER_CTX_set_num(ctx, num); return 1; } BLOCK_CIPHER_generic(NID_aria, 128, 1, 16, ctr, ctr, CTR, 0) BLOCK_CIPHER_generic(NID_aria, 192, 1, 16, ctr, ctr, CTR, 0) BLOCK_CIPHER_generic(NID_aria, 256, 1, 16, ctr, ctr, CTR, 0) /* Authenticated cipher modes (GCM/CCM) */ /* increment counter (64-bit int) by 1 */ static void ctr64_inc(unsigned char *counter) { int n = 8; unsigned char c; do { --n; c = counter[n]; ++c; counter[n] = c; if (c) return; } while (n); } 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 = ossl_aria_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, &gctx->ks.ks); CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) ossl_aria_encrypt); if (ret < 0) { ERR_raise(ERR_LIB_EVP, 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 aria_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) { EVP_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX, c); switch (type) { case EVP_CTRL_INIT: gctx->key_set = 0; gctx->iv_set = 0; gctx->ivlen = EVP_CIPHER_get_iv_length(c->cipher); gctx->iv = c->iv; gctx->taglen = -1; gctx->iv_gen = 0; gctx->tls_aad_len = -1; return 1; case EVP_CTRL_GET_IVLEN: *(int *)ptr = gctx->ivlen; 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 != c->iv) OPENSSL_free(gctx->iv); if ((gctx->iv = OPENSSL_malloc(arg)) == NULL) { ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE); return 0; } } gctx->ivlen = arg; return 1; case EVP_CTRL_AEAD_SET_TAG: if (arg <= 0 || arg > 16 || EVP_CIPHER_CTX_is_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_is_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_is_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_is_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 */ if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN) return 0; len -= EVP_GCM_TLS_EXPLICIT_IV_LEN; /* If decrypting correct for tag too */ if (!EVP_CIPHER_CTX_is_encrypting(c)) { if (len < EVP_GCM_TLS_TAG_LEN) return 0; 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_ARIA_GCM_CTX *gctx_out = EVP_C_DATA(EVP_ARIA_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 == c->iv) gctx_out->iv = out->iv; else { if ((gctx_out->iv = OPENSSL_malloc(gctx->ivlen)) == NULL) { ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE); return 0; } memcpy(gctx_out->iv, gctx->iv, gctx->ivlen); } return 1; } default: 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_is_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_is_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 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_is_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_is_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 aria_gcm_cleanup(EVP_CIPHER_CTX *ctx) { EVP_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX, ctx); if (gctx->iv != ctx->iv) OPENSSL_free(gctx->iv); 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 = ossl_aria_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, &cctx->ks.ks); CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, &cctx->ks, (block128_f) ossl_aria_encrypt); if (ret < 0) { ERR_raise(ERR_LIB_EVP, EVP_R_ARIA_KEY_SETUP_FAILED); return 0; } cctx->str = NULL; cctx->key_set = 1; } if (iv) { memcpy(ctx->iv, iv, 15 - cctx->L); cctx->iv_set = 1; } return 1; } static int aria_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) { EVP_ARIA_CCM_CTX *cctx = EVP_C_DATA(EVP_ARIA_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_GET_IVLEN: *(int *)ptr = 15 - cctx->L; 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 */ if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN) return 0; len -= EVP_CCM_TLS_EXPLICIT_IV_LEN; /* If decrypting correct for tag too */ if (!EVP_CIPHER_CTX_is_encrypting(c)) { if (len < cctx->M) return 0; 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(c->iv, ptr, arg); return 1; case EVP_CTRL_AEAD_SET_IVLEN: arg = 15 - arg; /* fall thru */ 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_is_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_is_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_ARIA_CCM_CTX *cctx_out = EVP_C_DATA(EVP_ARIA_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 aria_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { EVP_ARIA_CCM_CTX *cctx = EVP_C_DATA(EVP_ARIA_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_is_encrypting(ctx)) memcpy(out, EVP_CIPHER_CTX_buf_noconst(ctx), EVP_CCM_TLS_EXPLICIT_IV_LEN); /* Get rest of IV from explicit IV */ memcpy(ctx->iv + 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, ctx->iv, 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_is_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 aria_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { EVP_ARIA_CCM_CTX *cctx = EVP_C_DATA(EVP_ARIA_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 aria_ccm_tls_cipher(ctx, out, in, len); /* EVP_*Final() doesn't return any data */ if (in == NULL && out != NULL) return 0; if (!cctx->iv_set) return -1; if (!out) { if (!in) { if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 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; } /* The tag must be set before actually decrypting data */ if (!EVP_CIPHER_CTX_is_encrypting(ctx) && !cctx->tag_set) return -1; /* If not set length yet do it */ if (!cctx->len_set) { if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len)) return -1; cctx->len_set = 1; } if (EVP_CIPHER_CTX_is_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; } } #define aria_ccm_cleanup NULL #define ARIA_AUTH_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ | EVP_CIPH_CUSTOM_COPY | EVP_CIPH_FLAG_AEAD_CIPHER \ | EVP_CIPH_CUSTOM_IV_LENGTH) #define BLOCK_CIPHER_aead(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ static const EVP_CIPHER aria_##keylen##_##mode = { \ nid##_##keylen##_##nmode, \ blocksize, keylen/8, ivlen, \ ARIA_AUTH_FLAGS|EVP_CIPH_##MODE##_MODE, \ EVP_ORIG_GLOBAL, \ aria_##mode##_init_key, \ aria_##mode##_cipher, \ aria_##mode##_cleanup, \ sizeof(EVP_ARIA_##MODE##_CTX), \ NULL,NULL,aria_##mode##_ctrl,NULL }; \ const EVP_CIPHER *EVP_aria_##keylen##_##mode(void) \ { return (EVP_CIPHER*)&aria_##keylen##_##mode; } BLOCK_CIPHER_aead(NID_aria, 128, 1, 12, gcm, gcm, GCM, 0) BLOCK_CIPHER_aead(NID_aria, 192, 1, 12, gcm, gcm, GCM, 0) BLOCK_CIPHER_aead(NID_aria, 256, 1, 12, gcm, gcm, GCM, 0) BLOCK_CIPHER_aead(NID_aria, 128, 1, 12, ccm, ccm, CCM, 0) BLOCK_CIPHER_aead(NID_aria, 192, 1, 12, ccm, ccm, CCM, 0) BLOCK_CIPHER_aead(NID_aria, 256, 1, 12, ccm, ccm, CCM, 0) #endif