core/crypto/crypto.c - optee-os-mtk - Git at Google

 // SPDX-License-Identifier: BSD-2-Clause
 /*
  * Copyright (c) 2017, Linaro Limited
  */

 #include <assert.h>
 #include <compiler.h>
 #include <crypto/crypto.h>
 #include <crypto/crypto_impl.h>
 #include <kernel/panic.h>
 #include <stdlib.h>
 #include <string.h>
 #include <utee_defines.h>

 TEE_Result crypto_hash_alloc_ctx(void **ctx, uint32_t algo)
 {
 	TEE_Result res = TEE_ERROR_NOT_IMPLEMENTED;
 	struct crypto_hash_ctx *c = NULL;

 	/*
 	 * Use default cryptographic implement if no matching
 	 * drvcrypt device.
 	 */
 	res = drvcrypt_hash_alloc_ctx(&c, algo);

 	if (res == TEE_ERROR_NOT_IMPLEMENTED) {
 		switch (algo) {
 		case TEE_ALG_MD5:
 			res = crypto_md5_alloc_ctx(&c);
 			break;
 		case TEE_ALG_SHA1:
 			res = crypto_sha1_alloc_ctx(&c);
 			break;
 		case TEE_ALG_SHA224:
 			res = crypto_sha224_alloc_ctx(&c);
 			break;
 		case TEE_ALG_SHA256:
 			res = crypto_sha256_alloc_ctx(&c);
 			break;
 		case TEE_ALG_SHA384:
 			res = crypto_sha384_alloc_ctx(&c);
 			break;
 		case TEE_ALG_SHA512:
 			res = crypto_sha512_alloc_ctx(&c);
 			break;
 		default:
 			break;
 		}
 	}

 	if (!res)
 		*ctx = c;

 	return res;
 }

 static const struct crypto_hash_ops *hash_ops(void *ctx)
 {
 	struct crypto_hash_ctx *c = ctx;

 	assert(c && c->ops);

 	return c->ops;
 }

 void crypto_hash_free_ctx(void *ctx)
 {
 	if (ctx)
 		hash_ops(ctx)->free_ctx(ctx);
 }

 void crypto_hash_copy_state(void *dst_ctx, void *src_ctx)
 {
 	hash_ops(dst_ctx)->copy_state(dst_ctx, src_ctx);
 }

 TEE_Result crypto_hash_init(void *ctx)
 {
 	return hash_ops(ctx)->init(ctx);
 }

 TEE_Result crypto_hash_update(void *ctx, const uint8_t *data, size_t len)
 {
 	return hash_ops(ctx)->update(ctx, data, len);
 }

 TEE_Result crypto_hash_final(void *ctx, uint8_t *digest, size_t len)
 {
 	return hash_ops(ctx)->final(ctx, digest, len);
 }

 TEE_Result crypto_cipher_alloc_ctx(void **ctx, uint32_t algo)
 {
 	TEE_Result res = TEE_SUCCESS;
 	struct crypto_cipher_ctx *c = NULL;

 	switch (algo) {
 	case TEE_ALG_AES_ECB_NOPAD:
 		res = crypto_aes_ecb_alloc_ctx(&c);
 		break;
 	case TEE_ALG_AES_CBC_NOPAD:
 		res = crypto_aes_cbc_alloc_ctx(&c);
 		break;
 	case TEE_ALG_AES_CTR:
 		res = crypto_aes_ctr_alloc_ctx(&c);
 		break;
 	case TEE_ALG_AES_CTS:
 		res = crypto_aes_cts_alloc_ctx(&c);
 		break;
 	case TEE_ALG_AES_XTS:
 		res = crypto_aes_xts_alloc_ctx(&c);
 		break;
 	case TEE_ALG_DES_ECB_NOPAD:
 		res = crypto_des_ecb_alloc_ctx(&c);
 		break;
 	case TEE_ALG_DES3_ECB_NOPAD:
 		res = crypto_des3_ecb_alloc_ctx(&c);
 		break;
 	case TEE_ALG_DES_CBC_NOPAD:
 		res = crypto_des_cbc_alloc_ctx(&c);
 		break;
 	case TEE_ALG_DES3_CBC_NOPAD:
 		res = crypto_des3_cbc_alloc_ctx(&c);
 		break;
 	default:
 		return TEE_ERROR_NOT_IMPLEMENTED;
 	}

 	if (!res)
 		*ctx = c;

 	return res;
 }

 static const struct crypto_cipher_ops *cipher_ops(void *ctx)
 {
 	struct crypto_cipher_ctx *c = ctx;

 	assert(c && c->ops);

 	return c->ops;
 }

 void crypto_cipher_free_ctx(void *ctx)
 {
 	if (ctx)
 		cipher_ops(ctx)->free_ctx(ctx);
 }

 void crypto_cipher_copy_state(void *dst_ctx, void *src_ctx)
 {
 	cipher_ops(dst_ctx)->copy_state(dst_ctx, src_ctx);
 }

 TEE_Result crypto_cipher_init(void *ctx, TEE_OperationMode mode,
 			      const uint8_t *key1, size_t key1_len,
 			      const uint8_t *key2, size_t key2_len,
 			      const uint8_t *iv, size_t iv_len)
 {
 	if (mode != TEE_MODE_DECRYPT && mode != TEE_MODE_ENCRYPT)
 		return TEE_ERROR_BAD_PARAMETERS;

 	return cipher_ops(ctx)->init(ctx, mode, key1, key1_len, key2, key2_len,
 				     iv, iv_len);
 }

 TEE_Result crypto_cipher_update(void *ctx, TEE_OperationMode mode __unused,
 				bool last_block, const uint8_t *data,
 				size_t len, uint8_t *dst)
 {
 	return cipher_ops(ctx)->update(ctx, last_block, data, len, dst);
 }

 void crypto_cipher_final(void *ctx)
 {
 	cipher_ops(ctx)->final(ctx);
 }

 TEE_Result crypto_cipher_get_block_size(uint32_t algo, size_t *size)
 {
 	uint32_t class = TEE_ALG_GET_CLASS(algo);

 	if (class != TEE_OPERATION_CIPHER && class != TEE_OPERATION_MAC &&
 	    class != TEE_OPERATION_AE)
 		return TEE_ERROR_BAD_PARAMETERS;

 	switch (TEE_ALG_GET_MAIN_ALG(algo)) {
 	case TEE_MAIN_ALGO_AES:
 		*size = TEE_AES_BLOCK_SIZE;
 		return TEE_SUCCESS;
 	case TEE_MAIN_ALGO_DES:
 	case TEE_MAIN_ALGO_DES3:
 		*size = TEE_DES_BLOCK_SIZE;
 		return TEE_SUCCESS;
 	default:
 		return TEE_ERROR_NOT_SUPPORTED;
 	}
 }

 TEE_Result crypto_mac_alloc_ctx(void **ctx, uint32_t algo)
 {
 	TEE_Result res = TEE_SUCCESS;
 	struct crypto_mac_ctx *c = NULL;

 	switch (algo) {
 	case TEE_ALG_HMAC_MD5:
 		res = crypto_hmac_md5_alloc_ctx(&c);
 		break;
 	case TEE_ALG_HMAC_SHA1:
 		res = crypto_hmac_sha1_alloc_ctx(&c);
 		break;
 	case TEE_ALG_HMAC_SHA224:
 		res = crypto_hmac_sha224_alloc_ctx(&c);
 		break;
 	case TEE_ALG_HMAC_SHA256:
 		res = crypto_hmac_sha256_alloc_ctx(&c);
 		break;
 	case TEE_ALG_HMAC_SHA384:
 		res = crypto_hmac_sha384_alloc_ctx(&c);
 		break;
 	case TEE_ALG_HMAC_SHA512:
 		res = crypto_hmac_sha512_alloc_ctx(&c);
 		break;
 	case TEE_ALG_AES_CBC_MAC_NOPAD:
 		res = crypto_aes_cbc_mac_nopad_alloc_ctx(&c);
 		break;
 	case TEE_ALG_AES_CBC_MAC_PKCS5:
 		res = crypto_aes_cbc_mac_pkcs5_alloc_ctx(&c);
 		break;
 	case TEE_ALG_DES_CBC_MAC_NOPAD:
 		res = crypto_des_cbc_mac_nopad_alloc_ctx(&c);
 		break;
 	case TEE_ALG_DES_CBC_MAC_PKCS5:
 		res = crypto_des_cbc_mac_pkcs5_alloc_ctx(&c);
 		break;
 	case TEE_ALG_DES3_CBC_MAC_NOPAD:
 		res = crypto_des3_cbc_mac_nopad_alloc_ctx(&c);
 		break;
 	case TEE_ALG_DES3_CBC_MAC_PKCS5:
 		res = crypto_des3_cbc_mac_pkcs5_alloc_ctx(&c);
 		break;
 	case TEE_ALG_AES_CMAC:
 		res = crypto_aes_cmac_alloc_ctx(&c);
 		break;
 	default:
 		return TEE_ERROR_NOT_SUPPORTED;
 	}

 	if (!res)
 		*ctx = c;

 	return res;
 }

 static const struct crypto_mac_ops *mac_ops(void *ctx)
 {
 	struct crypto_mac_ctx *c = ctx;

 	assert(c && c->ops);

 	return c->ops;
 }

 void crypto_mac_free_ctx(void *ctx)
 {
 	if (ctx)
 		mac_ops(ctx)->free_ctx(ctx);
 }

 void crypto_mac_copy_state(void *dst_ctx, void *src_ctx)
 {
 	mac_ops(dst_ctx)->copy_state(dst_ctx, src_ctx);
 }

 TEE_Result crypto_mac_init(void *ctx, const uint8_t *key, size_t len)
 {
 	return mac_ops(ctx)->init(ctx, key, len);
 }

 TEE_Result crypto_mac_update(void *ctx, const uint8_t *data, size_t len)
 {
 	if (!len)
 		return TEE_SUCCESS;

 	return mac_ops(ctx)->update(ctx, data, len);
 }

 TEE_Result crypto_mac_final(void *ctx, uint8_t *digest, size_t digest_len)
 {
 	return mac_ops(ctx)->final(ctx, digest, digest_len);
 }

 TEE_Result crypto_authenc_alloc_ctx(void **ctx, uint32_t algo)
 {
 	TEE_Result res = TEE_SUCCESS;
 	struct crypto_authenc_ctx *c = NULL;

 	switch (algo) {
 #if defined(CFG_CRYPTO_CCM)
 	case TEE_ALG_AES_CCM:
 		res = crypto_aes_ccm_alloc_ctx(&c);
 		break;
 #endif
 #if defined(CFG_CRYPTO_GCM)
 	case TEE_ALG_AES_GCM:
 		res = crypto_aes_gcm_alloc_ctx(&c);
 		break;
 #endif
 	default:
 		return TEE_ERROR_NOT_IMPLEMENTED;
 	}

 	if (!res)
 		*ctx = c;

 	return res;
 }

 static const struct crypto_authenc_ops *ae_ops(void *ctx)
 {
 	struct crypto_authenc_ctx *c = ctx;

 	assert(c && c->ops);

 	return c->ops;
 }

 TEE_Result crypto_authenc_init(void *ctx, TEE_OperationMode mode,
 			       const uint8_t *key, size_t key_len,
 			       const uint8_t *nonce, size_t nonce_len,
 			       size_t tag_len, size_t aad_len,
 			       size_t payload_len)
 {
 	return ae_ops(ctx)->init(ctx, mode, key, key_len, nonce, nonce_len,
 				 tag_len, aad_len, payload_len);
 }

 TEE_Result crypto_authenc_update_aad(void *ctx, TEE_OperationMode mode __unused,
 				     const uint8_t *data, size_t len)
 {
 	return ae_ops(ctx)->update_aad(ctx, data, len);
 }


 TEE_Result crypto_authenc_update_payload(void *ctx, TEE_OperationMode mode,
 					 const uint8_t *src_data,
 					 size_t src_len, uint8_t *dst_data,
 					 size_t *dst_len)
 {
 	if (*dst_len < src_len)
 		return TEE_ERROR_SHORT_BUFFER;
 	*dst_len = src_len;

 	return ae_ops(ctx)->update_payload(ctx, mode, src_data, src_len,
 					   dst_data);
 }

 TEE_Result crypto_authenc_enc_final(void *ctx, const uint8_t *src_data,
 				    size_t src_len, uint8_t *dst_data,
 				    size_t *dst_len, uint8_t *dst_tag,
 				    size_t *dst_tag_len)
 {
 	if (*dst_len < src_len)
 		return TEE_ERROR_SHORT_BUFFER;
 	*dst_len = src_len;

 	return ae_ops(ctx)->enc_final(ctx, src_data, src_len, dst_data,
 				      dst_tag, dst_tag_len);
 }

 TEE_Result crypto_authenc_dec_final(void *ctx, const uint8_t *src_data,
 				    size_t src_len, uint8_t *dst_data,
 				    size_t *dst_len, const uint8_t *tag,
 				    size_t tag_len)
 {
 	if (*dst_len < src_len)
 		return TEE_ERROR_SHORT_BUFFER;
 	*dst_len = src_len;

 	return ae_ops(ctx)->dec_final(ctx, src_data, src_len, dst_data, tag,
 				      tag_len);
 }

 void crypto_authenc_final(void *ctx)
 {
 	ae_ops(ctx)->final(ctx);
 }

 void crypto_authenc_free_ctx(void *ctx)
 {
 	if (ctx)
 		ae_ops(ctx)->free_ctx(ctx);
 }

 void crypto_authenc_copy_state(void *dst_ctx, void *src_ctx)
 {
 	ae_ops(dst_ctx)->copy_state(dst_ctx, src_ctx);
 }

 #if !defined(CFG_CRYPTO_RSA) && !defined(CFG_CRYPTO_DSA) && \
     !defined(CFG_CRYPTO_DH) && !defined(CFG_CRYPTO_ECC)
 struct bignum *crypto_bignum_allocate(size_t size_bits __unused)
 {
 	return NULL;
 }

 TEE_Result crypto_bignum_bin2bn(const uint8_t *from __unused,
 				size_t fromsize __unused,
 				struct bignum *to __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 size_t crypto_bignum_num_bytes(struct bignum *a __unused)
 {
 	return 0;
 }

 size_t crypto_bignum_num_bits(struct bignum *a __unused)
 {
 	return 0;
 }

 /*
  * crypto_bignum_allocate() and crypto_bignum_bin2bn() failing should be
  * enough to guarantee that the functions calling this function aren't
  * called, but just in case add a panic() here to avoid unexpected
  * behavoir.
  */
 static void bignum_cant_happen(void)
 {
 	volatile bool b = true;

 	/* Avoid warning about function does not return */
 	if (b)
 		panic();
 }

 void crypto_bignum_bn2bin(const struct bignum *from __unused,
 			  uint8_t *to __unused)
 {
 	bignum_cant_happen();
 }

 void crypto_bignum_copy(struct bignum *to __unused,
 			const struct bignum *from __unused)
 {
 	bignum_cant_happen();
 }

 void crypto_bignum_free(struct bignum *a)
 {
 	if (a)
 		panic();
 }

 void crypto_bignum_clear(struct bignum *a __unused)
 {
 	bignum_cant_happen();
 }

 /* return -1 if a<b, 0 if a==b, +1 if a>b */
 int32_t crypto_bignum_compare(struct bignum *a __unused,
 			      struct bignum *b __unused)
 {
 	bignum_cant_happen();
 	return -1;
 }
 #endif

 #if !defined(CFG_CRYPTO_RSA)
 TEE_Result crypto_acipher_alloc_rsa_keypair(struct rsa_keypair *s __unused,
 					    size_t key_size_bits __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result
 crypto_acipher_alloc_rsa_public_key(struct rsa_public_key *s __unused,
 				    size_t key_size_bits __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 void crypto_acipher_free_rsa_public_key(struct rsa_public_key *s __unused)
 {
 }

 TEE_Result crypto_acipher_gen_rsa_key(struct rsa_keypair *key __unused,
 				      size_t key_size __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_rsanopad_decrypt(struct rsa_keypair *key __unused,
 					   const uint8_t *src __unused,
 					   size_t src_len __unused,
 					   uint8_t *dst __unused,
 					   size_t *dst_len __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_rsanopad_encrypt(struct rsa_public_key *key __unused,
 					   const uint8_t *src __unused,
 					   size_t src_len __unused,
 					   uint8_t *dst __unused,
 					   size_t *dst_len __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_rsaes_decrypt(uint32_t algo __unused,
 					struct rsa_keypair *key __unused,
 					const uint8_t *label __unused,
 					size_t label_len __unused,
 					const uint8_t *src __unused,
 					size_t src_len __unused,
 					uint8_t *dst __unused,
 					size_t *dst_len __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_rsaes_encrypt(uint32_t algo __unused,
 					struct rsa_public_key *key __unused,
 					const uint8_t *label __unused,
 					size_t label_len __unused,
 					const uint8_t *src __unused,
 					size_t src_len __unused,
 					uint8_t *dst __unused,
 					size_t *dst_len __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_rsassa_sign(uint32_t algo __unused,
 				      struct rsa_keypair *key __unused,
 				      int salt_len __unused,
 				      const uint8_t *msg __unused,
 				      size_t msg_len __unused,
 				      uint8_t *sig __unused,
 				      size_t *sig_len __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_rsassa_verify(uint32_t algo __unused,
 					struct rsa_public_key *key __unused,
 					int salt_len __unused,
 					const uint8_t *msg __unused,
 					size_t msg_len __unused,
 					const uint8_t *sig __unused,
 					size_t sig_len __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }
 #endif /*!CFG_CRYPTO_RSA*/

 #if !defined(CFG_CRYPTO_DSA)
 TEE_Result crypto_acipher_alloc_dsa_keypair(struct dsa_keypair *s __unused,
 					    size_t key_size_bits __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result
 crypto_acipher_alloc_dsa_public_key(struct dsa_public_key *s __unused,
 				    size_t key_size_bits __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_gen_dsa_key(struct dsa_keypair *key __unused,
 				      size_t key_size __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_dsa_sign(uint32_t algo __unused,
 				   struct dsa_keypair *key __unused,
 				   const uint8_t *msg __unused,
 				   size_t msg_len __unused,
 				   uint8_t *sig __unused,
 				   size_t *sig_len __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_dsa_verify(uint32_t algo __unused,
 				     struct dsa_public_key *key __unused,
 				     const uint8_t *msg __unused,
 				     size_t msg_len __unused,
 				     const uint8_t *sig __unused,
 				     size_t sig_len __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }
 #endif /*!CFG_CRYPTO_DSA*/

 #if !defined(CFG_CRYPTO_DH)
 TEE_Result crypto_acipher_alloc_dh_keypair(struct dh_keypair *s __unused,
 					   size_t key_size_bits __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_gen_dh_key(struct dh_keypair *key __unused,
 				     struct bignum *q __unused,
 				     size_t xbits __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result
 crypto_acipher_dh_shared_secret(struct dh_keypair *private_key __unused,
 				struct bignum *public_key __unused,
 				struct bignum *secret __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }
 #endif /*!CFG_CRYPTO_DH*/

 #if !defined(CFG_CRYPTO_ECC)
 TEE_Result
 crypto_acipher_alloc_ecc_public_key(struct ecc_public_key *s __unused,
 				    size_t key_size_bits __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_alloc_ecc_keypair(struct ecc_keypair *s __unused,
 					    size_t key_size_bits __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 void crypto_acipher_free_ecc_public_key(struct ecc_public_key *s __unused)
 {
 }

 TEE_Result crypto_acipher_gen_ecc_key(struct ecc_keypair *key __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_ecc_sign(uint32_t algo __unused,
 				   struct ecc_keypair *key __unused,
 				   const uint8_t *msg __unused,
 				   size_t msg_len __unused,
 				   uint8_t *sig __unused,
 				   size_t *sig_len __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result crypto_acipher_ecc_verify(uint32_t algo __unused,
 				     struct ecc_public_key *key __unused,
 				     const uint8_t *msg __unused,
 				     size_t msg_len __unused,
 				     const uint8_t *sig __unused,
 				     size_t sig_len __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }

 TEE_Result
 crypto_acipher_ecc_shared_secret(struct ecc_keypair *private_key __unused,
 				 struct ecc_public_key *public_key __unused,
 				 void *secret __unused,
 				 unsigned long *secret_len __unused)
 {
 	return TEE_ERROR_NOT_IMPLEMENTED;
 }
 #endif /*!CFG_CRYPTO_ECC*/
	// SPDX-License-Identifier: BSD-2-Clause
	/*
	* Copyright (c) 2017, Linaro Limited
	*/

	#include <assert.h>
	#include <compiler.h>
	#include <crypto/crypto.h>
	#include <crypto/crypto_impl.h>
	#include <kernel/panic.h>
	#include <stdlib.h>
	#include <string.h>
	#include <utee_defines.h>

	TEE_Result crypto_hash_alloc_ctx(void **ctx, uint32_t algo)
	{
	TEE_Result res = TEE_ERROR_NOT_IMPLEMENTED;
	struct crypto_hash_ctx *c = NULL;

	/*
	* Use default cryptographic implement if no matching
	* drvcrypt device.
	*/
	res = drvcrypt_hash_alloc_ctx(&c, algo);

	if (res == TEE_ERROR_NOT_IMPLEMENTED) {
	switch (algo) {
	case TEE_ALG_MD5:
	res = crypto_md5_alloc_ctx(&c);
	break;
	case TEE_ALG_SHA1:
	res = crypto_sha1_alloc_ctx(&c);
	break;
	case TEE_ALG_SHA224:
	res = crypto_sha224_alloc_ctx(&c);
	break;
	case TEE_ALG_SHA256:
	res = crypto_sha256_alloc_ctx(&c);
	break;
	case TEE_ALG_SHA384:
	res = crypto_sha384_alloc_ctx(&c);
	break;
	case TEE_ALG_SHA512:
	res = crypto_sha512_alloc_ctx(&c);
	break;
	default:
	break;
	}
	}

	if (!res)
	*ctx = c;

	return res;
	}

	static const struct crypto_hash_ops hash_ops(void ctx)
	{
	struct crypto_hash_ctx *c = ctx;

	assert(c && c->ops);

	return c->ops;
	}

	void crypto_hash_free_ctx(void *ctx)
	{
	if (ctx)
	hash_ops(ctx)->free_ctx(ctx);
	}

	void crypto_hash_copy_state(void dst_ctx, void src_ctx)
	{
	hash_ops(dst_ctx)->copy_state(dst_ctx, src_ctx);
	}

	TEE_Result crypto_hash_init(void *ctx)
	{
	return hash_ops(ctx)->init(ctx);
	}

	TEE_Result crypto_hash_update(void ctx, const uint8_t data, size_t len)
	{
	return hash_ops(ctx)->update(ctx, data, len);
	}

	TEE_Result crypto_hash_final(void ctx, uint8_t digest, size_t len)
	{
	return hash_ops(ctx)->final(ctx, digest, len);
	}

	TEE_Result crypto_cipher_alloc_ctx(void **ctx, uint32_t algo)
	{
	TEE_Result res = TEE_SUCCESS;
	struct crypto_cipher_ctx *c = NULL;

	switch (algo) {
	case TEE_ALG_AES_ECB_NOPAD:
	res = crypto_aes_ecb_alloc_ctx(&c);
	break;
	case TEE_ALG_AES_CBC_NOPAD:
	res = crypto_aes_cbc_alloc_ctx(&c);
	break;
	case TEE_ALG_AES_CTR:
	res = crypto_aes_ctr_alloc_ctx(&c);
	break;
	case TEE_ALG_AES_CTS:
	res = crypto_aes_cts_alloc_ctx(&c);
	break;
	case TEE_ALG_AES_XTS:
	res = crypto_aes_xts_alloc_ctx(&c);
	break;
	case TEE_ALG_DES_ECB_NOPAD:
	res = crypto_des_ecb_alloc_ctx(&c);
	break;
	case TEE_ALG_DES3_ECB_NOPAD:
	res = crypto_des3_ecb_alloc_ctx(&c);
	break;
	case TEE_ALG_DES_CBC_NOPAD:
	res = crypto_des_cbc_alloc_ctx(&c);
	break;
	case TEE_ALG_DES3_CBC_NOPAD:
	res = crypto_des3_cbc_alloc_ctx(&c);
	break;
	default:
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	if (!res)
	*ctx = c;

	return res;
	}

	static const struct crypto_cipher_ops cipher_ops(void ctx)
	{
	struct crypto_cipher_ctx *c = ctx;

	assert(c && c->ops);

	return c->ops;
	}

	void crypto_cipher_free_ctx(void *ctx)
	{
	if (ctx)
	cipher_ops(ctx)->free_ctx(ctx);
	}

	void crypto_cipher_copy_state(void dst_ctx, void src_ctx)
	{
	cipher_ops(dst_ctx)->copy_state(dst_ctx, src_ctx);
	}

	TEE_Result crypto_cipher_init(void *ctx, TEE_OperationMode mode,
	const uint8_t *key1, size_t key1_len,
	const uint8_t *key2, size_t key2_len,
	const uint8_t *iv, size_t iv_len)
	{
	if (mode != TEE_MODE_DECRYPT && mode != TEE_MODE_ENCRYPT)
	return TEE_ERROR_BAD_PARAMETERS;

	return cipher_ops(ctx)->init(ctx, mode, key1, key1_len, key2, key2_len,
	iv, iv_len);
	}

	TEE_Result crypto_cipher_update(void *ctx, TEE_OperationMode mode __unused,
	bool last_block, const uint8_t *data,
	size_t len, uint8_t *dst)
	{
	return cipher_ops(ctx)->update(ctx, last_block, data, len, dst);
	}

	void crypto_cipher_final(void *ctx)
	{
	cipher_ops(ctx)->final(ctx);
	}

	TEE_Result crypto_cipher_get_block_size(uint32_t algo, size_t *size)
	{
	uint32_t class = TEE_ALG_GET_CLASS(algo);

	if (class != TEE_OPERATION_CIPHER && class != TEE_OPERATION_MAC &&
	class != TEE_OPERATION_AE)
	return TEE_ERROR_BAD_PARAMETERS;

	switch (TEE_ALG_GET_MAIN_ALG(algo)) {
	case TEE_MAIN_ALGO_AES:
	*size = TEE_AES_BLOCK_SIZE;
	return TEE_SUCCESS;
	case TEE_MAIN_ALGO_DES:
	case TEE_MAIN_ALGO_DES3:
	*size = TEE_DES_BLOCK_SIZE;
	return TEE_SUCCESS;
	default:
	return TEE_ERROR_NOT_SUPPORTED;
	}
	}

	TEE_Result crypto_mac_alloc_ctx(void **ctx, uint32_t algo)
	{
	TEE_Result res = TEE_SUCCESS;
	struct crypto_mac_ctx *c = NULL;

	switch (algo) {
	case TEE_ALG_HMAC_MD5:
	res = crypto_hmac_md5_alloc_ctx(&c);
	break;
	case TEE_ALG_HMAC_SHA1:
	res = crypto_hmac_sha1_alloc_ctx(&c);
	break;
	case TEE_ALG_HMAC_SHA224:
	res = crypto_hmac_sha224_alloc_ctx(&c);
	break;
	case TEE_ALG_HMAC_SHA256:
	res = crypto_hmac_sha256_alloc_ctx(&c);
	break;
	case TEE_ALG_HMAC_SHA384:
	res = crypto_hmac_sha384_alloc_ctx(&c);
	break;
	case TEE_ALG_HMAC_SHA512:
	res = crypto_hmac_sha512_alloc_ctx(&c);
	break;
	case TEE_ALG_AES_CBC_MAC_NOPAD:
	res = crypto_aes_cbc_mac_nopad_alloc_ctx(&c);
	break;
	case TEE_ALG_AES_CBC_MAC_PKCS5:
	res = crypto_aes_cbc_mac_pkcs5_alloc_ctx(&c);
	break;
	case TEE_ALG_DES_CBC_MAC_NOPAD:
	res = crypto_des_cbc_mac_nopad_alloc_ctx(&c);
	break;
	case TEE_ALG_DES_CBC_MAC_PKCS5:
	res = crypto_des_cbc_mac_pkcs5_alloc_ctx(&c);
	break;
	case TEE_ALG_DES3_CBC_MAC_NOPAD:
	res = crypto_des3_cbc_mac_nopad_alloc_ctx(&c);
	break;
	case TEE_ALG_DES3_CBC_MAC_PKCS5:
	res = crypto_des3_cbc_mac_pkcs5_alloc_ctx(&c);
	break;
	case TEE_ALG_AES_CMAC:
	res = crypto_aes_cmac_alloc_ctx(&c);
	break;
	default:
	return TEE_ERROR_NOT_SUPPORTED;
	}

	if (!res)
	*ctx = c;

	return res;
	}

	static const struct crypto_mac_ops mac_ops(void ctx)
	{
	struct crypto_mac_ctx *c = ctx;

	assert(c && c->ops);

	return c->ops;
	}

	void crypto_mac_free_ctx(void *ctx)
	{
	if (ctx)
	mac_ops(ctx)->free_ctx(ctx);
	}

	void crypto_mac_copy_state(void dst_ctx, void src_ctx)
	{
	mac_ops(dst_ctx)->copy_state(dst_ctx, src_ctx);
	}

	TEE_Result crypto_mac_init(void ctx, const uint8_t key, size_t len)
	{
	return mac_ops(ctx)->init(ctx, key, len);
	}

	TEE_Result crypto_mac_update(void ctx, const uint8_t data, size_t len)
	{
	if (!len)
	return TEE_SUCCESS;

	return mac_ops(ctx)->update(ctx, data, len);
	}

	TEE_Result crypto_mac_final(void ctx, uint8_t digest, size_t digest_len)
	{
	return mac_ops(ctx)->final(ctx, digest, digest_len);
	}

	TEE_Result crypto_authenc_alloc_ctx(void **ctx, uint32_t algo)
	{
	TEE_Result res = TEE_SUCCESS;
	struct crypto_authenc_ctx *c = NULL;

	switch (algo) {
	#if defined(CFG_CRYPTO_CCM)
	case TEE_ALG_AES_CCM:
	res = crypto_aes_ccm_alloc_ctx(&c);
	break;
	#endif
	#if defined(CFG_CRYPTO_GCM)
	case TEE_ALG_AES_GCM:
	res = crypto_aes_gcm_alloc_ctx(&c);
	break;
	#endif
	default:
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	if (!res)
	*ctx = c;

	return res;
	}

	static const struct crypto_authenc_ops ae_ops(void ctx)
	{
	struct crypto_authenc_ctx *c = ctx;

	assert(c && c->ops);

	return c->ops;
	}

	TEE_Result crypto_authenc_init(void *ctx, TEE_OperationMode mode,
	const uint8_t *key, size_t key_len,
	const uint8_t *nonce, size_t nonce_len,
	size_t tag_len, size_t aad_len,
	size_t payload_len)
	{
	return ae_ops(ctx)->init(ctx, mode, key, key_len, nonce, nonce_len,
	tag_len, aad_len, payload_len);
	}

	TEE_Result crypto_authenc_update_aad(void *ctx, TEE_OperationMode mode __unused,
	const uint8_t *data, size_t len)
	{
	return ae_ops(ctx)->update_aad(ctx, data, len);
	}


	TEE_Result crypto_authenc_update_payload(void *ctx, TEE_OperationMode mode,
	const uint8_t *src_data,
	size_t src_len, uint8_t *dst_data,
	size_t *dst_len)
	{
	if (*dst_len < src_len)
	return TEE_ERROR_SHORT_BUFFER;
	*dst_len = src_len;

	return ae_ops(ctx)->update_payload(ctx, mode, src_data, src_len,
	dst_data);
	}

	TEE_Result crypto_authenc_enc_final(void ctx, const uint8_t src_data,
	size_t src_len, uint8_t *dst_data,
	size_t dst_len, uint8_t dst_tag,
	size_t *dst_tag_len)
	{
	if (*dst_len < src_len)
	return TEE_ERROR_SHORT_BUFFER;
	*dst_len = src_len;

	return ae_ops(ctx)->enc_final(ctx, src_data, src_len, dst_data,
	dst_tag, dst_tag_len);
	}

	TEE_Result crypto_authenc_dec_final(void ctx, const uint8_t src_data,
	size_t src_len, uint8_t *dst_data,
	size_t dst_len, const uint8_t tag,
	size_t tag_len)
	{
	if (*dst_len < src_len)
	return TEE_ERROR_SHORT_BUFFER;
	*dst_len = src_len;

	return ae_ops(ctx)->dec_final(ctx, src_data, src_len, dst_data, tag,
	tag_len);
	}

	void crypto_authenc_final(void *ctx)
	{
	ae_ops(ctx)->final(ctx);
	}

	void crypto_authenc_free_ctx(void *ctx)
	{
	if (ctx)
	ae_ops(ctx)->free_ctx(ctx);
	}

	void crypto_authenc_copy_state(void dst_ctx, void src_ctx)
	{
	ae_ops(dst_ctx)->copy_state(dst_ctx, src_ctx);
	}

	#if !defined(CFG_CRYPTO_RSA) && !defined(CFG_CRYPTO_DSA) && \
	!defined(CFG_CRYPTO_DH) && !defined(CFG_CRYPTO_ECC)
	struct bignum *crypto_bignum_allocate(size_t size_bits __unused)
	{
	return NULL;
	}

	TEE_Result crypto_bignum_bin2bn(const uint8_t *from __unused,
	size_t fromsize __unused,
	struct bignum *to __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	size_t crypto_bignum_num_bytes(struct bignum *a __unused)
	{
	return 0;
	}

	size_t crypto_bignum_num_bits(struct bignum *a __unused)
	{
	return 0;
	}

	/*
	* crypto_bignum_allocate() and crypto_bignum_bin2bn() failing should be
	* enough to guarantee that the functions calling this function aren't
	* called, but just in case add a panic() here to avoid unexpected
	* behavoir.
	*/
	static void bignum_cant_happen(void)
	{
	volatile bool b = true;

	/* Avoid warning about function does not return */
	if (b)
	panic();
	}

	void crypto_bignum_bn2bin(const struct bignum *from __unused,
	uint8_t *to __unused)
	{
	bignum_cant_happen();
	}

	void crypto_bignum_copy(struct bignum *to __unused,
	const struct bignum *from __unused)
	{
	bignum_cant_happen();
	}

	void crypto_bignum_free(struct bignum *a)
	{
	if (a)
	panic();
	}

	void crypto_bignum_clear(struct bignum *a __unused)
	{
	bignum_cant_happen();
	}

	/* return -1 if a<b, 0 if a==b, +1 if a>b */
	int32_t crypto_bignum_compare(struct bignum *a __unused,
	struct bignum *b __unused)
	{
	bignum_cant_happen();
	return -1;
	}
	#endif

	#if !defined(CFG_CRYPTO_RSA)
	TEE_Result crypto_acipher_alloc_rsa_keypair(struct rsa_keypair *s __unused,
	size_t key_size_bits __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result
	crypto_acipher_alloc_rsa_public_key(struct rsa_public_key *s __unused,
	size_t key_size_bits __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	void crypto_acipher_free_rsa_public_key(struct rsa_public_key *s __unused)
	{
	}

	TEE_Result crypto_acipher_gen_rsa_key(struct rsa_keypair *key __unused,
	size_t key_size __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_rsanopad_decrypt(struct rsa_keypair *key __unused,
	const uint8_t *src __unused,
	size_t src_len __unused,
	uint8_t *dst __unused,
	size_t *dst_len __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_rsanopad_encrypt(struct rsa_public_key *key __unused,
	const uint8_t *src __unused,
	size_t src_len __unused,
	uint8_t *dst __unused,
	size_t *dst_len __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_rsaes_decrypt(uint32_t algo __unused,
	struct rsa_keypair *key __unused,
	const uint8_t *label __unused,
	size_t label_len __unused,
	const uint8_t *src __unused,
	size_t src_len __unused,
	uint8_t *dst __unused,
	size_t *dst_len __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_rsaes_encrypt(uint32_t algo __unused,
	struct rsa_public_key *key __unused,
	const uint8_t *label __unused,
	size_t label_len __unused,
	const uint8_t *src __unused,
	size_t src_len __unused,
	uint8_t *dst __unused,
	size_t *dst_len __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_rsassa_sign(uint32_t algo __unused,
	struct rsa_keypair *key __unused,
	int salt_len __unused,
	const uint8_t *msg __unused,
	size_t msg_len __unused,
	uint8_t *sig __unused,
	size_t *sig_len __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_rsassa_verify(uint32_t algo __unused,
	struct rsa_public_key *key __unused,
	int salt_len __unused,
	const uint8_t *msg __unused,
	size_t msg_len __unused,
	const uint8_t *sig __unused,
	size_t sig_len __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}
	#endif /!CFG_CRYPTO_RSA/

	#if !defined(CFG_CRYPTO_DSA)
	TEE_Result crypto_acipher_alloc_dsa_keypair(struct dsa_keypair *s __unused,
	size_t key_size_bits __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result
	crypto_acipher_alloc_dsa_public_key(struct dsa_public_key *s __unused,
	size_t key_size_bits __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_gen_dsa_key(struct dsa_keypair *key __unused,
	size_t key_size __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_dsa_sign(uint32_t algo __unused,
	struct dsa_keypair *key __unused,
	const uint8_t *msg __unused,
	size_t msg_len __unused,
	uint8_t *sig __unused,
	size_t *sig_len __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_dsa_verify(uint32_t algo __unused,
	struct dsa_public_key *key __unused,
	const uint8_t *msg __unused,
	size_t msg_len __unused,
	const uint8_t *sig __unused,
	size_t sig_len __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}
	#endif /!CFG_CRYPTO_DSA/

	#if !defined(CFG_CRYPTO_DH)
	TEE_Result crypto_acipher_alloc_dh_keypair(struct dh_keypair *s __unused,
	size_t key_size_bits __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_gen_dh_key(struct dh_keypair *key __unused,
	struct bignum *q __unused,
	size_t xbits __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result
	crypto_acipher_dh_shared_secret(struct dh_keypair *private_key __unused,
	struct bignum *public_key __unused,
	struct bignum *secret __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}
	#endif /!CFG_CRYPTO_DH/

	#if !defined(CFG_CRYPTO_ECC)
	TEE_Result
	crypto_acipher_alloc_ecc_public_key(struct ecc_public_key *s __unused,
	size_t key_size_bits __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_alloc_ecc_keypair(struct ecc_keypair *s __unused,
	size_t key_size_bits __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	void crypto_acipher_free_ecc_public_key(struct ecc_public_key *s __unused)
	{
	}

	TEE_Result crypto_acipher_gen_ecc_key(struct ecc_keypair *key __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_ecc_sign(uint32_t algo __unused,
	struct ecc_keypair *key __unused,
	const uint8_t *msg __unused,
	size_t msg_len __unused,
	uint8_t *sig __unused,
	size_t *sig_len __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result crypto_acipher_ecc_verify(uint32_t algo __unused,
	struct ecc_public_key *key __unused,
	const uint8_t *msg __unused,
	size_t msg_len __unused,
	const uint8_t *sig __unused,
	size_t sig_len __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}

	TEE_Result
	crypto_acipher_ecc_shared_secret(struct ecc_keypair *private_key __unused,
	struct ecc_public_key *public_key __unused,
	void *secret __unused,
	unsigned long *secret_len __unused)
	{
	return TEE_ERROR_NOT_IMPLEMENTED;
	}
	#endif /!CFG_CRYPTO_ECC/