int verify_i(argon2_context *context, const char *hash) {
int result;
if (0 == context->outlen || NULL == hash) {
return ARGON2_OUT_PTR_MISMATCH;
}
result = argon2_core(context, Argon2_i);
if (ARGON2_OK != result) {
return result;
}
return 0 == memcmp(hash, context->out, context->outlen);
}
int hash_argon2i(void *out, size_t outlen, const void *in, size_t inlen,
const void *salt, size_t saltlen, unsigned int t_cost,
unsigned int m_cost) {
argon2_context context;
/* Detect and reject overflowing sizes */
/* TODO: This should probably be fixed in the function signature */
if (inlen > UINT32_MAX) {
return ARGON2_PWD_TOO_LONG;
}
if (outlen > UINT32_MAX) {
return ARGON2_OUTPUT_TOO_LONG;
}
if (saltlen > UINT32_MAX) {
return ARGON2_SALT_TOO_LONG;
}
context.out = (uint8_t *)out;
context.outlen = (uint32_t)outlen;
context.pwd = (uint8_t *)in;
context.pwdlen = (uint32_t)inlen;
context.salt = (uint8_t *)salt;
context.saltlen = (uint32_t)saltlen;
context.secret = NULL;
context.secretlen = 0;
context.ad = NULL;
context.adlen = 0;
context.t_cost = t_cost;
context.m_cost = m_cost;
context.lanes = 1;
context.threads = 1;
context.allocate_cbk = NULL;
context.free_cbk = NULL;
context.flags = ARGON2_DEFAULT_FLAGS;
return argon2_core(&context, Argon2_i);
}
int argon2i(argon2_context *context) { return argon2_core(context, Argon2_i); }
int argon2d(argon2_context *context) { return argon2_core(context, Argon2_d); }
int argon2_hash(const uint32_t t_cost, const uint32_t m_cost,
const uint32_t parallelism, const void *pwd,
const size_t pwdlen, const void *salt, const size_t saltlen,
void *hash, const size_t hashlen, char *encoded,
const size_t encodedlen, argon2_type type) {
argon2_context context;
int result;
uint8_t *out;
/* Detect and reject overflowing sizes */
/* TODO: This should probably be fixed in the function signature */
if (pwdlen > ARGON2_MAX_PWD_LENGTH) {
return ARGON2_PWD_TOO_LONG;
}
if (hashlen > ARGON2_MAX_OUTLEN) {
return ARGON2_OUTPUT_TOO_LONG;
}
if (saltlen > ARGON2_MAX_SALT_LENGTH) {
return ARGON2_SALT_TOO_LONG;
}
out = malloc(hashlen);
if (!out) {
return ARGON2_MEMORY_ALLOCATION_ERROR;
}
context.out = (uint8_t *)out;
context.outlen = (uint32_t)hashlen;
context.pwd = CONST_CAST(uint8_t *)pwd;
context.pwdlen = (uint32_t)pwdlen;
context.salt = CONST_CAST(uint8_t *)salt;
context.saltlen = (uint32_t)saltlen;
context.secret = NULL;
context.secretlen = 0;
context.ad = NULL;
context.adlen = 0;
context.t_cost = t_cost;
context.m_cost = m_cost;
context.lanes = parallelism;
context.threads = parallelism;
context.allocate_cbk = NULL;
context.free_cbk = NULL;
context.flags = ARGON2_DEFAULT_FLAGS;
result = argon2_core(&context, type);
if (result != ARGON2_OK) {
secure_wipe_memory(out, hashlen);
free(out);
return result;
}
/* if raw hash requested, write it */
if (hash) {
memcpy(hash, out, hashlen);
}
/* if encoding requested, write it */
if (encoded && encodedlen) {
if (!encode_string(encoded, encodedlen, &context, type)) {
secure_wipe_memory(out, hashlen); /* wipe buffers if error */
secure_wipe_memory(encoded, encodedlen);
free(out);
return ARGON2_ENCODING_FAIL;
}
}
secure_wipe_memory(out, hashlen);
free(out);
return ARGON2_OK;
}