65 	TEE_Result res = TEE_SUCCESS;  in hash_sha256()  local
68 	res = crypto_hash_alloc_ctx(&ctx, TEE_ALG_SHA256);  in hash_sha256()
69 	if (res != TEE_SUCCESS)  in hash_sha256()
70 		return res;  in hash_sha256()
71 	res = crypto_hash_init(ctx);  in hash_sha256()
72 	if (res != TEE_SUCCESS)  in hash_sha256()
74 	res = crypto_hash_update(ctx, msg, msg_len);  in hash_sha256()
75 	if (res != TEE_SUCCESS)  in hash_sha256()
77 	res = crypto_hash_final(ctx, hash, TEE_SHA256_HASH_SIZE);  in hash_sha256()
81 	return res;  in hash_sha256()
111 	TEE_Result res = TEE_SUCCESS;  in generate_key()  local
121 	res = crypto_acipher_alloc_ecc_keypair(key, TEE_TYPE_ECDSA_KEYPAIR,  in generate_key()
123 	if (res != TEE_SUCCESS)  in generate_key()
128 	res = crypto_bignum_bin2bn(private_key, KEY_SIZE, key->d);  in generate_key()
129 	if (res != TEE_SUCCESS)  in generate_key()
136 		res = TEE_ERROR_OUT_OF_MEMORY;  in generate_key()
139 	res = crypto_acipher_alloc_ecc_public_key(pubkey,  in generate_key()
142 	if (res != TEE_SUCCESS)  in generate_key()
147 	res = crypto_bignum_bin2bn(public_key_x, KEY_SIZE, pubkey->x);  in generate_key()
148 	if (res != TEE_SUCCESS)  in generate_key()
151 	res = crypto_bignum_bin2bn(public_key_y, KEY_SIZE, pubkey->y);  in generate_key()
152 	if (res != TEE_SUCCESS)  in generate_key()
162 	return res;  in generate_key()
168 	TEE_Result res = TEE_SUCCESS;  in sign_ecdsa_sha256()  local
172 	res = generate_key();  in sign_ecdsa_sha256()
173 	if (res != TEE_SUCCESS)  in sign_ecdsa_sha256()
174 		return res;  in sign_ecdsa_sha256()
177 	res = hash_sha256(msg, msg_len, hash_msg);  in sign_ecdsa_sha256()
178 	if (res != TEE_SUCCESS)  in sign_ecdsa_sha256()
182 	res = crypto_acipher_ecc_sign(TEE_ALG_ECDSA_SHA256, key, hash_msg,  in sign_ecdsa_sha256()
184 	if (res != TEE_SUCCESS)  in sign_ecdsa_sha256()
188 	res = crypto_acipher_ecc_verify(TEE_ALG_ECDSA_SHA256, pubkey, hash_msg,  in sign_ecdsa_sha256()
190 	if (res == TEE_SUCCESS)  in sign_ecdsa_sha256()
201 	return res;  in sign_ecdsa_sha256()