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chg: 'sc upgrade' - verify firmware file integrity with sha512 validation (@piwi)

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This commit is contained in:
iceman1001 2019-03-15 01:54:43 +01:00
commit c143f79e65
5 changed files with 142 additions and 33 deletions
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15
client/crypto/libpcrypto.c
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@ -19,6 +19,7 @@
#include <mbedtls/pk.h>
#include <mbedtls/ecdsa.h>
#include <mbedtls/sha256.h>
#include <mbedtls/sha512.h>
#include <mbedtls/ctr_drbg.h>
#include <mbedtls/entropy.h>
#include <mbedtls/error.h>
@ -102,6 +103,20 @@ int sha256hash(uint8_t *input, int length, uint8_t *hash) {
mbedtls_sha256_update(&sctx, input, length);
mbedtls_sha256_finish(&sctx, hash);
mbedtls_sha256_free(&sctx);
return 0;
}
int sha512hash(uint8_t *input, int length, uint8_t *hash) {
if (!hash || !input)
return 1;
mbedtls_sha512_context sctx;
mbedtls_sha512_init(&sctx);
mbedtls_sha512_starts(&sctx, 0); //SHA-512, not 384
mbedtls_sha512_update(&sctx, input, length);
mbedtls_sha512_finish(&sctx, hash);
mbedtls_sha512_free(&sctx);
return 0;
}

1
client/crypto/libpcrypto.h
View file

@ -22,6 +22,7 @@ extern int aes_cmac(uint8_t *iv, uint8_t *key, uint8_t *input, uint8_t *mac, int
extern int aes_cmac8(uint8_t *iv, uint8_t *key, uint8_t *input, uint8_t *mac, int length);
extern int sha256hash(uint8_t *input, int length, uint8_t *hash);
extern int sha512hash(uint8_t *input, int length, uint8_t *hash);
extern int ecdsa_key_create(uint8_t *key_d, uint8_t *key_xy);
extern int ecdsa_public_key_from_pk(mbedtls_pk_context *pk, uint8_t *key, size_t keylen);