diff options
Diffstat (limited to 'programs/psa/crypto_examples.c')
| -rw-r--r-- | programs/psa/crypto_examples.c | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/programs/psa/crypto_examples.c b/programs/psa/crypto_examples.c new file mode 100644 index 00000000000..b755f09ef2e --- /dev/null +++ b/programs/psa/crypto_examples.c @@ -0,0 +1,321 @@ +/* + * Copyright The Mbed TLS Contributors + * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later + */ + +#include "psa/crypto.h" +#include <string.h> +#include <stdio.h> +#include <stdlib.h> + +#define ASSERT(predicate) \ + do \ + { \ + if (!(predicate)) \ + { \ + printf("\tassertion failed at %s:%d - '%s'\r\n", \ + __FILE__, __LINE__, #predicate); \ + goto exit; \ + } \ + } while (0) + +#define ASSERT_STATUS(actual, expected) \ + do \ + { \ + if ((actual) != (expected)) \ + { \ + printf("\tassertion failed at %s:%d - " \ + "actual:%d expected:%d\r\n", __FILE__, __LINE__, \ + (psa_status_t) actual, (psa_status_t) expected); \ + goto exit; \ + } \ + } while (0) + +#if !defined(MBEDTLS_PSA_CRYPTO_C) || !defined(MBEDTLS_AES_C) || \ + !defined(MBEDTLS_CIPHER_MODE_CBC) || !defined(MBEDTLS_CIPHER_MODE_CTR) || \ + !defined(MBEDTLS_CIPHER_MODE_WITH_PADDING) || \ + defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER) +int main(void) +{ + printf("MBEDTLS_PSA_CRYPTO_C and/or MBEDTLS_AES_C and/or " + "MBEDTLS_CIPHER_MODE_CBC and/or MBEDTLS_CIPHER_MODE_CTR " + "and/or MBEDTLS_CIPHER_MODE_WITH_PADDING " + "not defined and/or MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER" + " defined.\r\n"); + return 0; +} +#else + +static psa_status_t cipher_operation(psa_cipher_operation_t *operation, + const uint8_t *input, + size_t input_size, + size_t part_size, + uint8_t *output, + size_t output_size, + size_t *output_len) +{ + psa_status_t status; + size_t bytes_to_write = 0, bytes_written = 0, len = 0; + + *output_len = 0; + while (bytes_written != input_size) { + bytes_to_write = (input_size - bytes_written > part_size ? + part_size : + input_size - bytes_written); + + status = psa_cipher_update(operation, input + bytes_written, + bytes_to_write, output + *output_len, + output_size - *output_len, &len); + ASSERT_STATUS(status, PSA_SUCCESS); + + bytes_written += bytes_to_write; + *output_len += len; + } + + status = psa_cipher_finish(operation, output + *output_len, + output_size - *output_len, &len); + ASSERT_STATUS(status, PSA_SUCCESS); + *output_len += len; + +exit: + return status; +} + +static psa_status_t cipher_encrypt(psa_key_id_t key, + psa_algorithm_t alg, + uint8_t *iv, + size_t iv_size, + const uint8_t *input, + size_t input_size, + size_t part_size, + uint8_t *output, + size_t output_size, + size_t *output_len) +{ + psa_status_t status; + psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT; + size_t iv_len = 0; + + memset(&operation, 0, sizeof(operation)); + status = psa_cipher_encrypt_setup(&operation, key, alg); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = psa_cipher_generate_iv(&operation, iv, iv_size, &iv_len); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = cipher_operation(&operation, input, input_size, part_size, + output, output_size, output_len); + ASSERT_STATUS(status, PSA_SUCCESS); + +exit: + psa_cipher_abort(&operation); + return status; +} + +static psa_status_t cipher_decrypt(psa_key_id_t key, + psa_algorithm_t alg, + const uint8_t *iv, + size_t iv_size, + const uint8_t *input, + size_t input_size, + size_t part_size, + uint8_t *output, + size_t output_size, + size_t *output_len) +{ + psa_status_t status; + psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT; + + memset(&operation, 0, sizeof(operation)); + status = psa_cipher_decrypt_setup(&operation, key, alg); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = psa_cipher_set_iv(&operation, iv, iv_size); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = cipher_operation(&operation, input, input_size, part_size, + output, output_size, output_len); + ASSERT_STATUS(status, PSA_SUCCESS); + +exit: + psa_cipher_abort(&operation); + return status; +} + +static psa_status_t +cipher_example_encrypt_decrypt_aes_cbc_nopad_1_block(void) +{ + enum { + block_size = PSA_BLOCK_CIPHER_BLOCK_LENGTH(PSA_KEY_TYPE_AES), + key_bits = 256, + part_size = block_size, + }; + const psa_algorithm_t alg = PSA_ALG_CBC_NO_PADDING; + + psa_status_t status; + psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; + psa_key_id_t key = 0; + size_t output_len = 0; + uint8_t iv[block_size]; + uint8_t input[block_size]; + uint8_t encrypt[block_size]; + uint8_t decrypt[block_size]; + + status = psa_generate_random(input, sizeof(input)); + ASSERT_STATUS(status, PSA_SUCCESS); + + psa_set_key_usage_flags(&attributes, + PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT); + psa_set_key_algorithm(&attributes, alg); + psa_set_key_type(&attributes, PSA_KEY_TYPE_AES); + psa_set_key_bits(&attributes, key_bits); + + status = psa_generate_key(&attributes, &key); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = cipher_encrypt(key, alg, iv, sizeof(iv), + input, sizeof(input), part_size, + encrypt, sizeof(encrypt), &output_len); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = cipher_decrypt(key, alg, iv, sizeof(iv), + encrypt, output_len, part_size, + decrypt, sizeof(decrypt), &output_len); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = memcmp(input, decrypt, sizeof(input)); + ASSERT_STATUS(status, PSA_SUCCESS); + +exit: + psa_destroy_key(key); + return status; +} + +static psa_status_t cipher_example_encrypt_decrypt_aes_cbc_pkcs7_multi(void) +{ + enum { + block_size = PSA_BLOCK_CIPHER_BLOCK_LENGTH(PSA_KEY_TYPE_AES), + key_bits = 256, + input_size = 100, + part_size = 10, + }; + + const psa_algorithm_t alg = PSA_ALG_CBC_PKCS7; + + psa_status_t status; + psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; + psa_key_id_t key = 0; + size_t output_len = 0; + uint8_t iv[block_size], input[input_size], + encrypt[input_size + block_size], decrypt[input_size + block_size]; + + status = psa_generate_random(input, sizeof(input)); + ASSERT_STATUS(status, PSA_SUCCESS); + + psa_set_key_usage_flags(&attributes, + PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT); + psa_set_key_algorithm(&attributes, alg); + psa_set_key_type(&attributes, PSA_KEY_TYPE_AES); + psa_set_key_bits(&attributes, key_bits); + + status = psa_generate_key(&attributes, &key); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = cipher_encrypt(key, alg, iv, sizeof(iv), + input, sizeof(input), part_size, + encrypt, sizeof(encrypt), &output_len); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = cipher_decrypt(key, alg, iv, sizeof(iv), + encrypt, output_len, part_size, + decrypt, sizeof(decrypt), &output_len); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = memcmp(input, decrypt, sizeof(input)); + ASSERT_STATUS(status, PSA_SUCCESS); + +exit: + psa_destroy_key(key); + return status; +} + +static psa_status_t cipher_example_encrypt_decrypt_aes_ctr_multi(void) +{ + enum { + block_size = PSA_BLOCK_CIPHER_BLOCK_LENGTH(PSA_KEY_TYPE_AES), + key_bits = 256, + input_size = 100, + part_size = 10, + }; + const psa_algorithm_t alg = PSA_ALG_CTR; + + psa_status_t status; + psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; + psa_key_id_t key = 0; + size_t output_len = 0; + uint8_t iv[block_size], input[input_size], encrypt[input_size], + decrypt[input_size]; + + status = psa_generate_random(input, sizeof(input)); + ASSERT_STATUS(status, PSA_SUCCESS); + + psa_set_key_usage_flags(&attributes, + PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT); + psa_set_key_algorithm(&attributes, alg); + psa_set_key_type(&attributes, PSA_KEY_TYPE_AES); + psa_set_key_bits(&attributes, key_bits); + + status = psa_generate_key(&attributes, &key); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = cipher_encrypt(key, alg, iv, sizeof(iv), + input, sizeof(input), part_size, + encrypt, sizeof(encrypt), &output_len); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = cipher_decrypt(key, alg, iv, sizeof(iv), + encrypt, output_len, part_size, + decrypt, sizeof(decrypt), &output_len); + ASSERT_STATUS(status, PSA_SUCCESS); + + status = memcmp(input, decrypt, sizeof(input)); + ASSERT_STATUS(status, PSA_SUCCESS); + +exit: + psa_destroy_key(key); + return status; +} + +static void cipher_examples(void) +{ + psa_status_t status; + + printf("cipher encrypt/decrypt AES CBC no padding:\r\n"); + status = cipher_example_encrypt_decrypt_aes_cbc_nopad_1_block(); + if (status == PSA_SUCCESS) { + printf("\tsuccess!\r\n"); + } + + printf("cipher encrypt/decrypt AES CBC PKCS7 multipart:\r\n"); + status = cipher_example_encrypt_decrypt_aes_cbc_pkcs7_multi(); + if (status == PSA_SUCCESS) { + printf("\tsuccess!\r\n"); + } + + printf("cipher encrypt/decrypt AES CTR multipart:\r\n"); + status = cipher_example_encrypt_decrypt_aes_ctr_multi(); + if (status == PSA_SUCCESS) { + printf("\tsuccess!\r\n"); + } +} + +int main(void) +{ + ASSERT(psa_crypto_init() == PSA_SUCCESS); + cipher_examples(); +exit: + mbedtls_psa_crypto_free(); + return 0; +} +#endif /* MBEDTLS_PSA_CRYPTO_C && MBEDTLS_AES_C && MBEDTLS_CIPHER_MODE_CBC && + MBEDTLS_CIPHER_MODE_CTR && MBEDTLS_CIPHER_MODE_WITH_PADDING */ |