This repository contains an example demonstrating the compilation and use of Mbed Crypto on Mbed OS.
Revision 1:59536a7f0430, committed 2019-11-08
- Comitter:
- mbed_official
- Date:
- Fri Nov 08 14:02:25 2019 +0000
- Parent:
- 0:f34b7234a060
- Child:
- 2:b0f0cdcada7f
- Commit message:
- Merge pull request #49 from Patater/reduce-ram-rsa
getting-started: Align with upstream getting started snippets, comment about pedagogical code, and reduce stack usage
.
Commit copied from https://github.com/ARMmbed/mbed-os-example-mbed-crypto
Changed in this revision
getting-started/main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/getting-started/main.cpp Tue Sep 24 12:02:20 2019 +0100 +++ b/getting-started/main.cpp Fri Nov 08 14:02:25 2019 +0000 @@ -32,61 +32,71 @@ 0x0e, 0x42, 0x75, 0x78, 0xb5, 0x0d, 0x17, 0x4f, \ 0x6e, 0x13, 0xf4, 0xfd, 0x16, 0x30, 0x3e, 0xc7, \ } -#define AES_KEY \ -{ \ -0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, \ -0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, \ -} -#define RSA_KEY \ -{ \ -0x30, 0x82, 0x02, 0x5e, 0x02, 0x01, 0x00, 0x02, 0x81, 0x81, 0x00, 0xaf, 0x05, \ -0x7d, 0x39, 0x6e, 0xe8, 0x4f, 0xb7, 0x5f, 0xdb, 0xb5, 0xc2, 0xb1, 0x3c, 0x7f, \ -0xe5, 0xa6, 0x54, 0xaa, 0x8a, 0xa2, 0x47, 0x0b, 0x54, 0x1e, 0xe1, 0xfe, 0xb0, \ -0xb1, 0x2d, 0x25, 0xc7, 0x97, 0x11, 0x53, 0x12, 0x49, 0xe1, 0x12, 0x96, 0x28, \ -0x04, 0x2d, 0xbb, 0xb6, 0xc1, 0x20, 0xd1, 0x44, 0x35, 0x24, 0xef, 0x4c, 0x0e, \ -0x6e, 0x1d, 0x89, 0x56, 0xee, 0xb2, 0x07, 0x7a, 0xf1, 0x23, 0x49, 0xdd, 0xee, \ -0xe5, 0x44, 0x83, 0xbc, 0x06, 0xc2, 0xc6, 0x19, 0x48, 0xcd, 0x02, 0xb2, 0x02, \ -0xe7, 0x96, 0xae, 0xbd, 0x94, 0xd3, 0xa7, 0xcb, 0xf8, 0x59, 0xc2, 0xc1, 0x81, \ -0x9c, 0x32, 0x4c, 0xb8, 0x2b, 0x9c, 0xd3, 0x4e, 0xde, 0x26, 0x3a, 0x2a, 0xbf, \ -0xfe, 0x47, 0x33, 0xf0, 0x77, 0x86, 0x9e, 0x86, 0x60, 0xf7, 0xd6, 0x83, 0x4d, \ -0xa5, 0x3d, 0x69, 0x0e, 0xf7, 0x98, 0x5f, 0x6b, 0xc3, 0x02, 0x03, 0x01, 0x00, \ -0x01, 0x02, 0x81, 0x81, 0x00, 0x87, 0x4b, 0xf0, 0xff, 0xc2, 0xf2, 0xa7, 0x1d, \ -0x14, 0x67, 0x1d, 0xdd, 0x01, 0x71, 0xc9, 0x54, 0xd7, 0xfd, 0xbf, 0x50, 0x28, \ -0x1e, 0x4f, 0x6d, 0x99, 0xea, 0x0e, 0x1e, 0xbc, 0xf8, 0x2f, 0xaa, 0x58, 0xe7, \ -0xb5, 0x95, 0xff, 0xb2, 0x93, 0xd1, 0xab, 0xe1, 0x7f, 0x11, 0x0b, 0x37, 0xc4, \ -0x8c, 0xc0, 0xf3, 0x6c, 0x37, 0xe8, 0x4d, 0x87, 0x66, 0x21, 0xd3, 0x27, 0xf6, \ -0x4b, 0xbe, 0x08, 0x45, 0x7d, 0x3e, 0xc4, 0x09, 0x8b, 0xa2, 0xfa, 0x0a, 0x31, \ -0x9f, 0xba, 0x41, 0x1c, 0x28, 0x41, 0xed, 0x7b, 0xe8, 0x31, 0x96, 0xa8, 0xcd, \ -0xf9, 0xda, 0xa5, 0xd0, 0x06, 0x94, 0xbc, 0x33, 0x5f, 0xc4, 0xc3, 0x22, 0x17, \ -0xfe, 0x04, 0x88, 0xbc, 0xe9, 0xcb, 0x72, 0x02, 0xe5, 0x94, 0x68, 0xb1, 0xea, \ -0xd1, 0x19, 0x00, 0x04, 0x77, 0xdb, 0x2c, 0xa7, 0x97, 0xfa, 0xc1, 0x9e, 0xda, \ -0x3f, 0x58, 0xc1, 0x02, 0x41, 0x00, 0xe2, 0xab, 0x76, 0x08, 0x41, 0xbb, 0x9d, \ -0x30, 0xa8, 0x1d, 0x22, 0x2d, 0xe1, 0xeb, 0x73, 0x81, 0xd8, 0x22, 0x14, 0x40, \ -0x7f, 0x1b, 0x97, 0x5c, 0xbb, 0xfe, 0x4e, 0x1a, 0x94, 0x67, 0xfd, 0x98, 0xad, \ -0xbd, 0x78, 0xf6, 0x07, 0x83, 0x6c, 0xa5, 0xbe, 0x19, 0x28, 0xb9, 0xd1, 0x60, \ -0xd9, 0x7f, 0xd4, 0x5c, 0x12, 0xd6, 0xb5, 0x2e, 0x2c, 0x98, 0x71, 0xa1, 0x74, \ -0xc6, 0x6b, 0x48, 0x81, 0x13, 0x02, 0x41, 0x00, 0xc5, 0xab, 0x27, 0x60, 0x21, \ -0x59, 0xae, 0x7d, 0x6f, 0x20, 0xc3, 0xc2, 0xee, 0x85, 0x1e, 0x46, 0xdc, 0x11, \ -0x2e, 0x68, 0x9e, 0x28, 0xd5, 0xfc, 0xbb, 0xf9, 0x90, 0xa9, 0x9e, 0xf8, 0xa9, \ -0x0b, 0x8b, 0xb4, 0x4f, 0xd3, 0x64, 0x67, 0xe7, 0xfc, 0x17, 0x89, 0xce, 0xb6, \ -0x63, 0xab, 0xda, 0x33, 0x86, 0x52, 0xc3, 0xc7, 0x3f, 0x11, 0x17, 0x74, 0x90, \ -0x2e, 0x84, 0x05, 0x65, 0x92, 0x70, 0x91, 0x02, 0x41, 0x00, 0xb6, 0xcd, 0xbd, \ -0x35, 0x4f, 0x7d, 0xf5, 0x79, 0xa6, 0x3b, 0x48, 0xb3, 0x64, 0x3e, 0x35, 0x3b, \ -0x84, 0x89, 0x87, 0x77, 0xb4, 0x8b, 0x15, 0xf9, 0x4e, 0x0b, 0xfc, 0x05, 0x67, \ -0xa6, 0xae, 0x59, 0x11, 0xd5, 0x7a, 0xd6, 0x40, 0x9c, 0xf7, 0x64, 0x7b, 0xf9, \ -0x62, 0x64, 0xe9, 0xbd, 0x87, 0xeb, 0x95, 0xe2, 0x63, 0xb7, 0x11, 0x0b, 0x9a, \ -0x1f, 0x9f, 0x94, 0xac, 0xce, 0xd0, 0xfa, 0xfa, 0x4d, 0x02, 0x40, 0x71, 0x19, \ -0x5e, 0xec, 0x37, 0xe8, 0xd2, 0x57, 0xde, 0xcf, 0xc6, 0x72, 0xb0, 0x7a, 0xe6, \ -0x39, 0xf1, 0x0c, 0xbb, 0x9b, 0x0c, 0x73, 0x9d, 0x0c, 0x80, 0x99, 0x68, 0xd6, \ -0x44, 0xa9, 0x4e, 0x3f, 0xd6, 0xed, 0x92, 0x87, 0x07, 0x7a, 0x14, 0x58, 0x3f, \ -0x37, 0x90, 0x58, 0xf7, 0x6a, 0x8a, 0xec, 0xd4, 0x3c, 0x62, 0xdc, 0x8c, 0x0f, \ -0x41, 0x76, 0x66, 0x50, 0xd7, 0x25, 0x27, 0x5a, 0xc4, 0xa1, 0x02, 0x41, 0x00, \ -0xbb, 0x32, 0xd1, 0x33, 0xed, 0xc2, 0xe0, 0x48, 0xd4, 0x63, 0x38, 0x8b, 0x7b, \ -0xe9, 0xcb, 0x4b, 0xe2, 0x9f, 0x4b, 0x62, 0x50, 0xbe, 0x60, 0x3e, 0x70, 0xe3, \ -0x64, 0x75, 0x01, 0xc9, 0x7d, 0xdd, 0xe2, 0x0a, 0x4e, 0x71, 0xbe, 0x95, 0xfd, \ -0x5e, 0x71, 0x78, 0x4e, 0x25, 0xac, 0xa4, 0xba, 0xf2, 0x5b, 0xe5, 0x73, 0x8a, \ -0xae, 0x59, 0xbb, 0xfe, 0x1c, 0x99, 0x77, 0x81, 0x44, 0x7a, 0x2b, 0x24, \ -} +/* This key is present as a global define for the purpose of example. In + * real-world applications, you would not have a key hardcoded in source like + * this. */ +static const uint8_t AES_KEY[] = +{ + 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, + 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, +}; +/* This key is present as a global define for the purpose of example. In + * real-world applications, you would not have a key hardcoded in source like + * this. */ +static const uint8_t RSA_KEY[] = +{ + 0x30, 0x82, 0x02, 0x5e, 0x02, 0x01, 0x00, 0x02, 0x81, 0x81, 0x00, 0xaf, + 0x05, 0x7d, 0x39, 0x6e, 0xe8, 0x4f, 0xb7, 0x5f, 0xdb, 0xb5, 0xc2, 0xb1, + 0x3c, 0x7f, 0xe5, 0xa6, 0x54, 0xaa, 0x8a, 0xa2, 0x47, 0x0b, 0x54, 0x1e, + 0xe1, 0xfe, 0xb0, 0xb1, 0x2d, 0x25, 0xc7, 0x97, 0x11, 0x53, 0x12, 0x49, + 0xe1, 0x12, 0x96, 0x28, 0x04, 0x2d, 0xbb, 0xb6, 0xc1, 0x20, 0xd1, 0x44, + 0x35, 0x24, 0xef, 0x4c, 0x0e, 0x6e, 0x1d, 0x89, 0x56, 0xee, 0xb2, 0x07, + 0x7a, 0xf1, 0x23, 0x49, 0xdd, 0xee, 0xe5, 0x44, 0x83, 0xbc, 0x06, 0xc2, + 0xc6, 0x19, 0x48, 0xcd, 0x02, 0xb2, 0x02, 0xe7, 0x96, 0xae, 0xbd, 0x94, + 0xd3, 0xa7, 0xcb, 0xf8, 0x59, 0xc2, 0xc1, 0x81, 0x9c, 0x32, 0x4c, 0xb8, + 0x2b, 0x9c, 0xd3, 0x4e, 0xde, 0x26, 0x3a, 0x2a, 0xbf, 0xfe, 0x47, 0x33, + 0xf0, 0x77, 0x86, 0x9e, 0x86, 0x60, 0xf7, 0xd6, 0x83, 0x4d, 0xa5, 0x3d, + 0x69, 0x0e, 0xf7, 0x98, 0x5f, 0x6b, 0xc3, 0x02, 0x03, 0x01, 0x00, 0x01, + 0x02, 0x81, 0x81, 0x00, 0x87, 0x4b, 0xf0, 0xff, 0xc2, 0xf2, 0xa7, 0x1d, + 0x14, 0x67, 0x1d, 0xdd, 0x01, 0x71, 0xc9, 0x54, 0xd7, 0xfd, 0xbf, 0x50, + 0x28, 0x1e, 0x4f, 0x6d, 0x99, 0xea, 0x0e, 0x1e, 0xbc, 0xf8, 0x2f, 0xaa, + 0x58, 0xe7, 0xb5, 0x95, 0xff, 0xb2, 0x93, 0xd1, 0xab, 0xe1, 0x7f, 0x11, + 0x0b, 0x37, 0xc4, 0x8c, 0xc0, 0xf3, 0x6c, 0x37, 0xe8, 0x4d, 0x87, 0x66, + 0x21, 0xd3, 0x27, 0xf6, 0x4b, 0xbe, 0x08, 0x45, 0x7d, 0x3e, 0xc4, 0x09, + 0x8b, 0xa2, 0xfa, 0x0a, 0x31, 0x9f, 0xba, 0x41, 0x1c, 0x28, 0x41, 0xed, + 0x7b, 0xe8, 0x31, 0x96, 0xa8, 0xcd, 0xf9, 0xda, 0xa5, 0xd0, 0x06, 0x94, + 0xbc, 0x33, 0x5f, 0xc4, 0xc3, 0x22, 0x17, 0xfe, 0x04, 0x88, 0xbc, 0xe9, + 0xcb, 0x72, 0x02, 0xe5, 0x94, 0x68, 0xb1, 0xea, 0xd1, 0x19, 0x00, 0x04, + 0x77, 0xdb, 0x2c, 0xa7, 0x97, 0xfa, 0xc1, 0x9e, 0xda, 0x3f, 0x58, 0xc1, + 0x02, 0x41, 0x00, 0xe2, 0xab, 0x76, 0x08, 0x41, 0xbb, 0x9d, 0x30, 0xa8, + 0x1d, 0x22, 0x2d, 0xe1, 0xeb, 0x73, 0x81, 0xd8, 0x22, 0x14, 0x40, 0x7f, + 0x1b, 0x97, 0x5c, 0xbb, 0xfe, 0x4e, 0x1a, 0x94, 0x67, 0xfd, 0x98, 0xad, + 0xbd, 0x78, 0xf6, 0x07, 0x83, 0x6c, 0xa5, 0xbe, 0x19, 0x28, 0xb9, 0xd1, + 0x60, 0xd9, 0x7f, 0xd4, 0x5c, 0x12, 0xd6, 0xb5, 0x2e, 0x2c, 0x98, 0x71, + 0xa1, 0x74, 0xc6, 0x6b, 0x48, 0x81, 0x13, 0x02, 0x41, 0x00, 0xc5, 0xab, + 0x27, 0x60, 0x21, 0x59, 0xae, 0x7d, 0x6f, 0x20, 0xc3, 0xc2, 0xee, 0x85, + 0x1e, 0x46, 0xdc, 0x11, 0x2e, 0x68, 0x9e, 0x28, 0xd5, 0xfc, 0xbb, 0xf9, + 0x90, 0xa9, 0x9e, 0xf8, 0xa9, 0x0b, 0x8b, 0xb4, 0x4f, 0xd3, 0x64, 0x67, + 0xe7, 0xfc, 0x17, 0x89, 0xce, 0xb6, 0x63, 0xab, 0xda, 0x33, 0x86, 0x52, + 0xc3, 0xc7, 0x3f, 0x11, 0x17, 0x74, 0x90, 0x2e, 0x84, 0x05, 0x65, 0x92, + 0x70, 0x91, 0x02, 0x41, 0x00, 0xb6, 0xcd, 0xbd, 0x35, 0x4f, 0x7d, 0xf5, + 0x79, 0xa6, 0x3b, 0x48, 0xb3, 0x64, 0x3e, 0x35, 0x3b, 0x84, 0x89, 0x87, + 0x77, 0xb4, 0x8b, 0x15, 0xf9, 0x4e, 0x0b, 0xfc, 0x05, 0x67, 0xa6, 0xae, + 0x59, 0x11, 0xd5, 0x7a, 0xd6, 0x40, 0x9c, 0xf7, 0x64, 0x7b, 0xf9, 0x62, + 0x64, 0xe9, 0xbd, 0x87, 0xeb, 0x95, 0xe2, 0x63, 0xb7, 0x11, 0x0b, 0x9a, + 0x1f, 0x9f, 0x94, 0xac, 0xce, 0xd0, 0xfa, 0xfa, 0x4d, 0x02, 0x40, 0x71, + 0x19, 0x5e, 0xec, 0x37, 0xe8, 0xd2, 0x57, 0xde, 0xcf, 0xc6, 0x72, 0xb0, + 0x7a, 0xe6, 0x39, 0xf1, 0x0c, 0xbb, 0x9b, 0x0c, 0x73, 0x9d, 0x0c, 0x80, + 0x99, 0x68, 0xd6, 0x44, 0xa9, 0x4e, 0x3f, 0xd6, 0xed, 0x92, 0x87, 0x07, + 0x7a, 0x14, 0x58, 0x3f, 0x37, 0x90, 0x58, 0xf7, 0x6a, 0x8a, 0xec, 0xd4, + 0x3c, 0x62, 0xdc, 0x8c, 0x0f, 0x41, 0x76, 0x66, 0x50, 0xd7, 0x25, 0x27, + 0x5a, 0xc4, 0xa1, 0x02, 0x41, 0x00, 0xbb, 0x32, 0xd1, 0x33, 0xed, 0xc2, + 0xe0, 0x48, 0xd4, 0x63, 0x38, 0x8b, 0x7b, 0xe9, 0xcb, 0x4b, 0xe2, 0x9f, + 0x4b, 0x62, 0x50, 0xbe, 0x60, 0x3e, 0x70, 0xe3, 0x64, 0x75, 0x01, 0xc9, + 0x7d, 0xdd, 0xe2, 0x0a, 0x4e, 0x71, 0xbe, 0x95, 0xfd, 0x5e, 0x71, 0x78, + 0x4e, 0x25, 0xac, 0xa4, 0xba, 0xf2, 0x5b, 0xe5, 0x73, 0x8a, 0xae, 0x59, + 0xbb, 0xfe, 0x1c, 0x99, 0x77, 0x81, 0x44, 0x7a, 0x2b, 0x24, +}; #if !defined(MBEDTLS_PSA_CRYPTO_C) || (MBEDTLS_VERSION_NUMBER < 0x02130000) int main(void) @@ -98,11 +108,10 @@ } #else -static void import_a_key(void) +static void import_a_key(const uint8_t *key, size_t key_len) { psa_status_t status; psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; - uint8_t data[] = AES_KEY; psa_key_handle_t handle; printf("Import an AES key...\t"); @@ -122,7 +131,7 @@ psa_set_key_bits(&attributes, 128); /* Import the key */ - status = psa_import_key(&attributes, data, sizeof(data), &handle); + status = psa_import_key(&attributes, key, key_len, &handle); if (status != PSA_SUCCESS) { printf("Failed to import key\n"); return; @@ -138,11 +147,10 @@ mbedtls_psa_crypto_free(); } -static void sign_a_message_using_rsa(void) +static void sign_a_message_using_rsa(const uint8_t *key, size_t key_len) { psa_status_t status; psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; - uint8_t key[] = RSA_KEY; uint8_t hash[] = "INPUT_FOR_SIGN"; uint8_t signature[PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE] = {0}; size_t signature_length; @@ -165,7 +173,7 @@ psa_set_key_bits(&attributes, 1024); /* Import the key */ - status = psa_import_key(&attributes, key, sizeof(key), &handle); + status = psa_import_key(&attributes, key, key_len, &handle); if (status != PSA_SUCCESS) { printf("Failed to import key\n"); return; @@ -192,7 +200,7 @@ mbedtls_psa_crypto_free(); } -static void encrypt_with_symmetric_ciphers(void) +static void encrypt_with_symmetric_ciphers(const uint8_t *key, size_t key_len) { enum { block_size = PSA_BLOCK_CIPHER_BLOCK_SIZE(PSA_KEY_TYPE_AES), @@ -203,7 +211,6 @@ uint8_t plaintext[block_size] = SOME_PLAINTEXT; uint8_t iv[block_size]; size_t iv_len; - uint8_t key[] = AES_KEY; uint8_t output[block_size]; size_t output_len; psa_key_handle_t handle; @@ -225,7 +232,7 @@ psa_set_key_algorithm(&attributes, alg); psa_set_key_type(&attributes, PSA_KEY_TYPE_AES); psa_set_key_bits(&attributes, 128); - status = psa_import_key(&attributes, key, sizeof(key), &handle); + status = psa_import_key(&attributes, key, key_len, &handle); if (status != PSA_SUCCESS) { printf("Failed to import a key\n"); return; @@ -266,7 +273,7 @@ mbedtls_psa_crypto_free(); } -static void decrypt_with_symmetric_ciphers(void) +static void decrypt_with_symmetric_ciphers(const uint8_t *key, size_t key_len) { enum { block_size = PSA_BLOCK_CIPHER_BLOCK_SIZE(PSA_KEY_TYPE_AES), @@ -277,7 +284,6 @@ psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT; uint8_t ciphertext[block_size] = SOME_CIPHERTEXT; uint8_t iv[block_size] = ENCRYPTED_WITH_IV; - uint8_t key[] = AES_KEY; uint8_t output[block_size]; size_t output_len; psa_key_handle_t handle; @@ -298,7 +304,7 @@ psa_set_key_algorithm(&attributes, alg); psa_set_key_type(&attributes, PSA_KEY_TYPE_AES); psa_set_key_bits(&attributes, 128); - status = psa_import_key(&attributes, key, sizeof(key), &handle); + status = psa_import_key(&attributes, key, key_len, &handle); if (status != PSA_SUCCESS) { printf("Failed to import a key\n"); return; @@ -759,10 +765,10 @@ { printf("-- Begin Mbed Crypto Getting Started --\n\n"); - import_a_key(); - sign_a_message_using_rsa(); - encrypt_with_symmetric_ciphers(); - decrypt_with_symmetric_ciphers(); + import_a_key(AES_KEY, sizeof(AES_KEY)); + sign_a_message_using_rsa(RSA_KEY, sizeof(RSA_KEY)); + encrypt_with_symmetric_ciphers(AES_KEY, sizeof(AES_KEY)); + decrypt_with_symmetric_ciphers(AES_KEY, sizeof(AES_KEY)); hash_a_message(); verify_a_hash(); generate_a_random_value();