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Migrate p256-m_driver_entrypoints.[hc] to new code style

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Signed-off-by: Aditya Deshpande <aditya.deshpande@arm.com>
This commit is contained in:
Aditya Deshpande 2023-03-21 18:56:31 +00:00
parent ebd624e691
commit ac363d8d20
2 changed files with 68 additions and 58 deletions
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58
3rdparty/p256-m/p256-m_driver_entrypoints.c vendored
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@ -28,18 +28,17 @@
psa_status_t p256_to_psa_error(int ret) psa_status_t p256_to_psa_error(int ret)
{ {
switch( ret ) switch (ret) {
{
case P256_SUCCESS: case P256_SUCCESS:
return( PSA_SUCCESS ); return PSA_SUCCESS;
case P256_INVALID_PUBKEY: case P256_INVALID_PUBKEY:
case P256_INVALID_PRIVKEY: case P256_INVALID_PRIVKEY:
return( PSA_ERROR_INVALID_ARGUMENT ); return PSA_ERROR_INVALID_ARGUMENT;
case P256_INVALID_SIGNATURE: case P256_INVALID_SIGNATURE:
return( PSA_ERROR_INVALID_SIGNATURE ); return PSA_ERROR_INVALID_SIGNATURE;
case P256_RANDOM_FAILED: case P256_RANDOM_FAILED:
default: default:
return( PSA_ERROR_GENERIC_ERROR ); return PSA_ERROR_GENERIC_ERROR;
} }
} }
@ -58,8 +57,9 @@ psa_status_t p256_transparent_generate_key(
/* /*
* p256-m generates a 32 byte private key, and expects to write to a buffer * p256-m generates a 32 byte private key, and expects to write to a buffer
* that is of that size. */ * that is of that size. */
if( key_buffer_size != 32 ) if (key_buffer_size != 32) {
return( status ); return status;
}
/* /*
* p256-m's keypair generation function outputs both public and private * p256-m's keypair generation function outputs both public and private
@ -68,13 +68,15 @@ psa_status_t p256_transparent_generate_key(
* function as an argument. */ * function as an argument. */
uint8_t *public_key_buffer = NULL; uint8_t *public_key_buffer = NULL;
public_key_buffer = mbedtls_calloc(1, 64); public_key_buffer = mbedtls_calloc(1, 64);
if( public_key_buffer == NULL) if (public_key_buffer == NULL) {
return( PSA_ERROR_INSUFFICIENT_MEMORY ); return PSA_ERROR_INSUFFICIENT_MEMORY;
}
status = p256_to_psa_error( status = p256_to_psa_error(
p256_gen_keypair(key_buffer, public_key_buffer)); p256_gen_keypair(key_buffer, public_key_buffer));
if( status == PSA_SUCCESS ) if (status == PSA_SUCCESS) {
*key_buffer_length = 32; *key_buffer_length = 32;
}
/* /*
* The storage format for a SECP256R1 keypair is just the private key, so * The storage format for a SECP256R1 keypair is just the private key, so
@ -107,13 +109,15 @@ psa_status_t p256_transparent_key_agreement(
* and that the shared secret buffer is big enough. */ * and that the shared secret buffer is big enough. */
psa_status_t status = PSA_ERROR_NOT_SUPPORTED; psa_status_t status = PSA_ERROR_NOT_SUPPORTED;
if (key_buffer_size != 32 || shared_secret_size < 32 || if (key_buffer_size != 32 || shared_secret_size < 32 ||
peer_key_length != 65 ) peer_key_length != 65) {
return ( status ); return status;
}
status = p256_to_psa_error( status = p256_to_psa_error(
p256_ecdh_shared_secret(shared_secret, key_buffer, peer_key+1)); p256_ecdh_shared_secret(shared_secret, key_buffer, peer_key+1));
if( status == PSA_SUCCESS ) if (status == PSA_SUCCESS) {
*shared_secret_length = 32; *shared_secret_length = 32;
}
return status; return status;
} }
@ -136,13 +140,15 @@ psa_status_t p256_transparent_sign_hash(
(void) alg; (void) alg;
psa_status_t status = PSA_ERROR_NOT_SUPPORTED; psa_status_t status = PSA_ERROR_NOT_SUPPORTED;
if( key_buffer_size != 32 || signature_size != 64) if (key_buffer_size != 32 || signature_size != 64) {
return( status ); return status;
}
status = p256_to_psa_error( status = p256_to_psa_error(
p256_ecdsa_sign(signature, key_buffer, hash, hash_length)); p256_ecdsa_sign(signature, key_buffer, hash, hash_length));
if( status == PSA_SUCCESS ) if (status == PSA_SUCCESS) {
*signature_length = 64; *signature_length = 64;
}
return status; return status;
} }
@ -158,8 +164,9 @@ static psa_status_t p256_verify_hash_with_public_key(
size_t signature_length) size_t signature_length)
{ {
psa_status_t status = PSA_ERROR_NOT_SUPPORTED; psa_status_t status = PSA_ERROR_NOT_SUPPORTED;
if( key_buffer_size != 65 || signature_length != 64 || *key_buffer != 0x04 ) if (key_buffer_size != 65 || signature_length != 64 || *key_buffer != 0x04) {
return status; return status;
}
const uint8_t *public_key_buffer = key_buffer + 1; const uint8_t *public_key_buffer = key_buffer + 1;
status = p256_to_psa_error( status = p256_to_psa_error(
@ -186,12 +193,14 @@ psa_status_t p256_transparent_verify_hash(
uint8_t *public_key_buffer = NULL; uint8_t *public_key_buffer = NULL;
size_t public_key_buffer_size = 65; size_t public_key_buffer_size = 65;
public_key_buffer = mbedtls_calloc(1, public_key_buffer_size); public_key_buffer = mbedtls_calloc(1, public_key_buffer_size);
if( public_key_buffer == NULL) if (public_key_buffer == NULL) {
return( PSA_ERROR_INSUFFICIENT_MEMORY ); return PSA_ERROR_INSUFFICIENT_MEMORY;
}
size_t *public_key_length = NULL; size_t *public_key_length = NULL;
public_key_length = mbedtls_calloc(1, sizeof(size_t)); public_key_length = mbedtls_calloc(1, sizeof(size_t));
if( public_key_length == NULL) if (public_key_length == NULL) {
return( PSA_ERROR_INSUFFICIENT_MEMORY ); return PSA_ERROR_INSUFFICIENT_MEMORY;
}
*public_key_length = 65; *public_key_length = 65;
/* The contents of key_buffer may either be the 32 byte private key /* The contents of key_buffer may either be the 32 byte private key
@ -204,8 +213,9 @@ psa_status_t p256_transparent_verify_hash(
public_key_buffer, public_key_buffer,
public_key_buffer_size, public_key_buffer_size,
public_key_length); public_key_length);
if( status != PSA_SUCCESS ) if (status != PSA_SUCCESS) {
goto exit; goto exit;
}
status = p256_verify_hash_with_public_key( status = p256_verify_hash_with_public_key(
public_key_buffer, public_key_buffer,
@ -218,7 +228,7 @@ psa_status_t p256_transparent_verify_hash(
exit: exit:
free(public_key_buffer); free(public_key_buffer);
free(public_key_length); free(public_key_length);
return ( status ); return status;
} }
#endif /* MBEDTLS_P256M_EXAMPLE_DRIVER_ENABLED */ #endif /* MBEDTLS_P256M_EXAMPLE_DRIVER_ENABLED */