Cross Reference: /external/openssl/crypto/cmac/cmac.c

Lines Matching refs:ctx
99 	CMAC_CTX *ctx;
100 	ctx = OPENSSL_malloc(sizeof(CMAC_CTX));
101 	if (!ctx)
103 	EVP_CIPHER_CTX_init(&ctx->cctx);
104 	ctx->nlast_block = -1;
105 	return ctx;
108 void CMAC_CTX_cleanup(CMAC_CTX *ctx)
111 	if (FIPS_mode() && !ctx->cctx.engine)
113 		FIPS_cmac_ctx_cleanup(ctx);
117 	EVP_CIPHER_CTX_cleanup(&ctx->cctx);
118 	OPENSSL_cleanse(ctx->tbl, EVP_MAX_BLOCK_LENGTH);
119 	OPENSSL_cleanse(ctx->k1, EVP_MAX_BLOCK_LENGTH);
120 	OPENSSL_cleanse(ctx->k2, EVP_MAX_BLOCK_LENGTH);
121 	OPENSSL_cleanse(ctx->last_block, EVP_MAX_BLOCK_LENGTH);
122 	ctx->nlast_block = -1;
125 EVP_CIPHER_CTX *CMAC_CTX_get0_cipher_ctx(CMAC_CTX *ctx)
127 	return &ctx->cctx;
130 void CMAC_CTX_free(CMAC_CTX *ctx)
132 	CMAC_CTX_cleanup(ctx);
133 	OPENSSL_free(ctx);
152 int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t keylen, 
160 		if ((impl || ctx->cctx.engine)
161 			&& !(ctx->cctx.flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW))
170 		if (!impl && !ctx->cctx.engine)
171 			return FIPS_cmac_init(ctx, key, keylen, cipher, NULL);
178 		if (ctx->nlast_block == -1)
180 		if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv))
182 		memset(ctx->tbl, 0, EVP_CIPHER_CTX_block_size(&ctx->cctx));
183 		ctx->nlast_block = 0;
187 	if (cipher && !EVP_EncryptInit_ex(&ctx->cctx, cipher, impl, NULL, NULL))
193 		if (!EVP_CIPHER_CTX_cipher(&ctx->cctx))
195 		if (!EVP_CIPHER_CTX_set_key_length(&ctx->cctx, keylen))
197 		if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, key, zero_iv))
199 		bl = EVP_CIPHER_CTX_block_size(&ctx->cctx);
200 		if (!EVP_Cipher(&ctx->cctx, ctx->tbl, zero_iv, bl))
202 		make_kn(ctx->k1, ctx->tbl, bl);
203 		make_kn(ctx->k2, ctx->k1, bl);
204 		OPENSSL_cleanse(ctx->tbl, bl);
206 		if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv))
209 		memset(ctx->tbl, 0, bl);
210 		ctx->nlast_block = 0;
215 int CMAC_Update(CMAC_CTX *ctx, const void *in, size_t dlen)
220 	if (FIPS_mode() && !ctx->cctx.engine)
221 		return FIPS_cmac_update(ctx, in, dlen);
223 	if (ctx->nlast_block == -1)
227 	bl = EVP_CIPHER_CTX_block_size(&ctx->cctx);
229 	if (ctx->nlast_block > 0)
232 		nleft = bl - ctx->nlast_block;
235 		memcpy(ctx->last_block + ctx->nlast_block, data, nleft);
237 		ctx->nlast_block += nleft;
243 		if (!EVP_Cipher(&ctx->cctx, ctx->tbl, ctx->last_block,bl))
249 		if (!EVP_Cipher(&ctx->cctx, ctx->tbl, data, bl))
255 	memcpy(ctx->last_block, data, dlen);
256 	ctx->nlast_block = dlen;
261 int CMAC_Final(CMAC_CTX *ctx, unsigned char *out, size_t *poutlen)
265 	if (FIPS_mode() && !ctx->cctx.engine)
266 		return FIPS_cmac_final(ctx, out, poutlen);
268 	if (ctx->nlast_block == -1)
270 	bl = EVP_CIPHER_CTX_block_size(&ctx->cctx);
274 	lb = ctx->nlast_block;
279 			out[i] = ctx->last_block[i] ^ ctx->k1[i];
283 		ctx->last_block[lb] = 0x80;
285 			memset(ctx->last_block + lb + 1, 0, bl - lb - 1);
287 			out[i] = ctx->last_block[i] ^ ctx->k2[i];
289 	if (!EVP_Cipher(&ctx->cctx, out, out, bl))
297 int CMAC_resume(CMAC_CTX *ctx)
299 	if (ctx->nlast_block == -1)
307 	return EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, ctx->tbl);