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Add AAD support to sm4 command

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This commit is contained in:
Zhi Guan
2023-03-13 15:47:26 +08:00
parent a3aa4e3104
commit 7c31764798
1 changed files with 51 additions and 7 deletions
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58
tools/sm4.c Normal file → Executable file
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@@ -26,7 +26,7 @@
#define SM4_MODE_CTR_SM3_HMAC 5
static const char *usage = "(-cbc|-ctr|-gcm|-cbc_sm3_hmac|-ctr_sm3_hmac) {-encrypt|-decrypt} -key hex -iv hex [-in file] [-out file]";
static const char *usage = "(-cbc|-ctr|-gcm|-cbc_sm3_hmac|-ctr_sm3_hmac) {-encrypt|-decrypt} -key hex -iv hex [-aad str| -aad_hex hex] [-in file] [-out file]";
static const char *options =
"Options\n"
@@ -43,6 +43,8 @@ static const char *options =
" -decrypt Decrypt\n"
" -key hex Symmetric key in HEX format\n"
" -iv hex IV in HEX format\n"
" -aad str Authenticated-only message\n"
" -aad_hex hex Authenticated-only data in HEX format\n"
" -in file | stdin Input data\n"
" -out file | stdout Output data\n"
"\n"
@@ -65,6 +67,10 @@ int sm4_main(int argc, char **argv)
char *prog = argv[0];
char *keyhex = NULL;
char *ivhex = NULL;
uint8_t *aad = NULL;
uint8_t *aad_buf = NULL;
size_t aadlen = 0;
char *infile = NULL;
char *outfile = NULL;
uint8_t key[48];
@@ -143,6 +149,30 @@ int sm4_main(int argc, char **argv)
} else if (!strcmp(*argv, "-gcm")) {
if (mode) goto bad;
mode = SM4_MODE_GCM;
} else if (!strcmp(*argv, "-aad")) {
if (--argc < 1) goto bad;
if (aad) {
fprintf(stderr, "%s: `-aad` or `aad_hex` has been specified\n", prog);
goto bad;
}
aad = (uint8_t *)(*(++argv));
aadlen = strlen((char *)aad);
} else if (!strcmp(*argv, "-aad_hex")) {
if (--argc < 1) goto bad;
if (aad) {
fprintf(stderr, "%s: `-aad` or `aad_hex` has been specified\n", prog);
goto bad;
}
aad = (uint8_t *)(*(++argv));
if (!(aad_buf = malloc(strlen((char *)aad)/2 + 1))) {
fprintf(stderr, "%s: malloc failure\n", prog);
goto end;
}
if (hex_to_bytes((char *)aad, strlen((char *)aad), aad_buf, &aadlen) != 1) {
fprintf(stderr, "%s: `-aad_hex` invalid HEX format argument\n", prog);
goto end;
}
aad = aad_buf;
} else if (!strcmp(*argv, "-in")) {
if (--argc < 1) goto bad;
infile = *(++argv);
@@ -212,6 +242,16 @@ bad:
break;
}
switch (mode) {
case SM4_MODE_CBC:
case SM4_MODE_CTR:
if (aad) {
fprintf(stderr, "%s: specified mode does not support `-aad` nor `-aad_hex`\n", prog);
goto end;
}
break;
}
if (mode == SM4_MODE_CTR) {
if (sm4_ctr_encrypt_init(&sm4_ctx.ctr, key, iv) != 1) {
error_print();
@@ -248,9 +288,9 @@ bad:
if (enc) {
switch (mode) {
case SM4_MODE_CBC: rv = sm4_cbc_encrypt_init(&sm4_ctx.cbc, key, iv); break;
case SM4_MODE_GCM: rv = sm4_gcm_encrypt_init(&sm4_ctx.gcm, key, keylen, iv, ivlen, NULL, 0, GHASH_SIZE); break;
case SM4_MODE_CBC_SM3_HMAC: rv = sm4_cbc_sm3_hmac_encrypt_init(&sm4_ctx.cbc_sm3_hmac, key, keylen, iv, ivlen, NULL, 0); break;
case SM4_MODE_CTR_SM3_HMAC: rv = sm4_ctr_sm3_hmac_encrypt_init(&sm4_ctx.ctr_sm3_hmac, key, keylen, iv, ivlen, NULL, 0); break;
case SM4_MODE_GCM: rv = sm4_gcm_encrypt_init(&sm4_ctx.gcm, key, keylen, iv, ivlen, aad, aadlen, GHASH_SIZE); break;
case SM4_MODE_CBC_SM3_HMAC: rv = sm4_cbc_sm3_hmac_encrypt_init(&sm4_ctx.cbc_sm3_hmac, key, keylen, iv, ivlen, aad, aadlen); break;
case SM4_MODE_CTR_SM3_HMAC: rv = sm4_ctr_sm3_hmac_encrypt_init(&sm4_ctx.ctr_sm3_hmac, key, keylen, iv, ivlen, aad, aadlen); break;
}
if (rv != 1) {
error_print();
@@ -292,9 +332,9 @@ bad:
} else {
switch (mode) {
case SM4_MODE_CBC: rv = sm4_cbc_decrypt_init(&sm4_ctx.cbc, key, iv); break;
case SM4_MODE_GCM: rv = sm4_gcm_decrypt_init(&sm4_ctx.gcm, key, keylen, iv, ivlen, NULL, 0, GHASH_SIZE); break;
case SM4_MODE_CBC_SM3_HMAC: rv = sm4_cbc_sm3_hmac_decrypt_init(&sm4_ctx.cbc_sm3_hmac, key, keylen, iv, ivlen, NULL, 0); break;
case SM4_MODE_CTR_SM3_HMAC: rv = sm4_ctr_sm3_hmac_decrypt_init(&sm4_ctx.ctr_sm3_hmac, key, keylen, iv, ivlen, NULL, 0); break;
case SM4_MODE_GCM: rv = sm4_gcm_decrypt_init(&sm4_ctx.gcm, key, keylen, iv, ivlen, aad, aadlen, GHASH_SIZE); break;
case SM4_MODE_CBC_SM3_HMAC: rv = sm4_cbc_sm3_hmac_decrypt_init(&sm4_ctx.cbc_sm3_hmac, key, keylen, iv, ivlen, aad, aadlen); break;
case SM4_MODE_CTR_SM3_HMAC: rv = sm4_ctr_sm3_hmac_decrypt_init(&sm4_ctx.ctr_sm3_hmac, key, keylen, iv, ivlen, aad, aadlen); break;
}
if (rv != 1) {
error_print();
@@ -342,6 +382,10 @@ end:
gmssl_secure_clear(iv, sizeof(iv));
gmssl_secure_clear(inbuf, sizeof(inbuf));
gmssl_secure_clear(outbuf, sizeof(outbuf));
if (aad_buf) {
gmssl_secure_clear(aad_buf, aadlen);
free(aad_buf);
}
if (infile && infp) fclose(infp);
if (outfile && outfp) fclose(outfp);
return ret;