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Fix CMAC padding for ARM

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This commit is contained in:
Aaron Tulino (Aaronjamt)
2025-12-21 02:58:56 -07:00
parent 8f6dd60029
commit 41670bef6a
2 changed files with 2 additions and 6 deletions
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armsrc/cmac_3des.c
+1 -3
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@@ -63,11 +63,9 @@ static void generate_subkeys(mbedtls_des3_context *ctx, uint8_t *K1, uint8_t *K2
// Pad the last block (adds 0x80 followed by zeros)
static void padding(const uint8_t *lastb, uint8_t *pad, size_t len) {
memset(pad, 0x00, len);
memcpy(pad, lastb, len);
pad[len] = 0x80;
for (size_t i = len + 1; i < 16; i++) {
pad[i] = 0x00;
}
}
// CMAC implementation
armsrc/cmac_calc.c
+1 -3
View File
@@ -89,11 +89,9 @@ static void generate_subkeys(mbedtls_aes_context *ctx, uint8_t *K1, uint8_t *K2)
// Pad the last block (adds 0x80 followed by zeros)
static void padding(const uint8_t *lastb, uint8_t *pad, size_t len) {
memset(pad, 0x00, len);
memcpy(pad, lastb, len);
pad[len] = 0x80;
for (size_t i = len + 1; i < 16; i++) {
pad[i] = 0x00;
}
}
// CMAC implementation