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| author | Joakim Bech <joakim.bech@linaro.org> | 2016-07-20 23:18:32 +0200 |
|---|---|---|
| committer | Joakim Bech <joakim.bech@linaro.org> | 2016-08-23 23:40:23 +0200 |
| commit | a144372af8d8e8a7214b55b743dba7fbf6351e99 (patch) | |
| tree | d6b60ab259afc8cd49d3ca41952bc2856943ef11 | |
| parent | 6b80ce36422b6eebe9b67bb7bbc483a3d740776a (diff) | |
Add signature verification
Use bytes2native on the digest to successfully verify the signature.
Signed-off-by: Joakim Bech <joakim.bech@linaro.org>
| -rw-r--r-- | CMakeLists.txt | 1 | ||||
| -rw-r--r-- | source/main.c | 6 |
2 files changed, 7 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 4f14709..d121251 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -35,6 +35,7 @@ add_executable(ecc_test ${TINYCRYPT-SRC}) set(TCSIGN-SRC source/ecc.c source/ecc_dh.c + source/ecc_dsa.c source/sha256.c source/utils.c source/main.c) diff --git a/source/main.c b/source/main.c index a6db27e..df89579 100644 --- a/source/main.c +++ b/source/main.c @@ -398,6 +398,7 @@ uint32_t dfu_init_prevalidate(uint8_t *p_init_data, uint32_t init_data_len) uint8_t digest[NUM_ECC_BYTES]; uint32_t r[NUM_ECC_DIGITS]; uint32_t s[NUM_ECC_DIGITS]; + uint32_t tmp[NUM_ECC_DIGITS]; // In order to support encryption then any init packet decryption function / library // should be called from here or implemented at this location. @@ -500,6 +501,11 @@ uint32_t dfu_init_prevalidate(uint8_t *p_init_data, uint32_t init_data_len) ecc_bytes2native(s, signature.p_s); hash_data(init_data.p_data, digest, init_data.length); + ecc_bytes2native(tmp, digest); + if (ecdsa_verify(&pub, tmp, r, s) != TC_SUCCESS) + perror("Verification failed\n"); + else + printf("Successfully verified the signature!\n"); return err_code; } |