/*
 * Copyright (c) 2022-2023, Arm Limited. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 *
 */

#include <string.h>

#include <delegated_attestation.h>
#include <psa/client.h>
#include <psa_manifest/sid.h>

#if !PLAT_RSS_NOT_SUPPORTED
psa_status_t
rss_delegated_attest_get_delegated_key(uint8_t   ecc_curve,
				       uint32_t  key_bits,
				       uint8_t  *key_buf,
				       size_t    key_buf_size,
				       size_t   *key_size,
				       uint32_t  hash_algo)
{
	psa_status_t status;
	psa_invec in_vec[] = {
		{&ecc_curve, sizeof(ecc_curve)},
		{&key_bits,  sizeof(key_bits)},
		{&hash_algo, sizeof(hash_algo)}
	};
	psa_outvec out_vec[] = {
		{key_buf, key_buf_size}
	};

	if (key_size == NULL) {
		return PSA_ERROR_INVALID_ARGUMENT;
	}

	status = psa_call(RSS_DELEGATED_SERVICE_HANDLE,
			  RSS_DELEGATED_ATTEST_GET_DELEGATED_KEY,
			  in_vec,  IOVEC_LEN(in_vec),
			  out_vec, IOVEC_LEN(out_vec));
	if (status == PSA_SUCCESS) {
		*key_size = out_vec[0].len;
	}

	return status;
}

psa_status_t
rss_delegated_attest_get_token(const uint8_t *dak_pub_hash,
			       size_t         dak_pub_hash_size,
			       uint8_t       *token_buf,
			       size_t         token_buf_size,
			       size_t        *token_size)
{
	psa_status_t status;
	psa_invec in_vec[] = {
		{dak_pub_hash, dak_pub_hash_size}
	};
	psa_outvec out_vec[] = {
		{token_buf, token_buf_size}
	};

	if (token_size == NULL) {
		return PSA_ERROR_INVALID_ARGUMENT;
	}

	status = psa_call(RSS_DELEGATED_SERVICE_HANDLE,
			  RSS_DELEGATED_ATTEST_GET_PLATFORM_TOKEN,
			  in_vec, IOVEC_LEN(in_vec),
			  out_vec, IOVEC_LEN(out_vec));
	if (status == PSA_SUCCESS) {
		*token_size = out_vec[0].len;
	}

	return status;
}


#else /* !PLAT_RSS_NOT_SUPPORTED */

static const uint8_t delegated_key[] = {
	0x20, 0x11, 0xC7, 0xF0, 0x3C, 0xEE, 0x43, 0x25, 0x17, 0x6E,
	0x52, 0x4F, 0x03, 0x3C, 0x0C, 0xE1, 0xE2, 0x1A, 0x76, 0xE6,
	0xC1, 0xA4, 0xF0, 0xB8, 0x39, 0xAA, 0x1D, 0xF6, 0x1E, 0x0E,
	0x8A, 0x5C, 0x8A, 0x05, 0x74, 0x0F, 0x9B, 0x69, 0xEF, 0xA7,
	0xEB, 0x1A, 0x41, 0x85, 0xBD, 0x11, 0x7F, 0x68
};

static const uint8_t platform_token[] = {
	0xD2, 0x84, 0x44, 0xA1, 0x01, 0x38, 0x22, 0xA0,
	0x59, 0x02, 0x33, 0xA9, 0x19, 0x01, 0x09, 0x78,
	0x1C, 0x68, 0x74, 0x74, 0x70, 0x3A, 0x2F, 0x2F,
	0x61, 0x72, 0x6D, 0x2E, 0x63, 0x6F, 0x6D, 0x2F,
	0x43, 0x43, 0x41, 0x2D, 0x53, 0x53, 0x44, 0x2F,
	0x31, 0x2E, 0x30, 0x2E, 0x30, 0x0A, 0x58, 0x20,
	0xB5, 0x97, 0x3C, 0xB6, 0x8B, 0xAA, 0x9F, 0xC5,
	0x55, 0x58, 0x78, 0x6B, 0x7E, 0xC6, 0x7F, 0x69,
	0xE4, 0x0D, 0xF5, 0xBA, 0x5A, 0xA9, 0x21, 0xCD,
	0x0C, 0x27, 0xF4, 0x05, 0x87, 0xA0, 0x11, 0xEA,
	0x19, 0x09, 0x5C, 0x58, 0x20, 0x7F, 0x45, 0x4C,
	0x46, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x3E,
	0x00, 0x01, 0x00, 0x00, 0x00, 0x50, 0x58, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x19, 0x01, 0x00,
	0x58, 0x21, 0x01, 0x07, 0x06, 0x05, 0x04, 0x03,
	0x02, 0x01, 0x00, 0x0F, 0x0E, 0x0D, 0x0C, 0x0B,
	0x0A, 0x09, 0x08, 0x17, 0x16, 0x15, 0x14, 0x13,
	0x12, 0x11, 0x10, 0x1F, 0x1E, 0x1D, 0x1C, 0x1B,
	0x1A, 0x19, 0x18, 0x19, 0x09, 0x61, 0x58, 0x21,
	0x01, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01,
	0x00, 0x0F, 0x0E, 0x0D, 0x0C, 0x0B, 0x0A, 0x09,
	0x08, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11,
	0x10, 0x1F, 0x1E, 0x1D, 0x1C, 0x1B, 0x1A, 0x19,
	0x18, 0x19, 0x09, 0x5B, 0x19, 0x30, 0x03, 0x19,
	0x09, 0x62, 0x67, 0x73, 0x68, 0x61, 0x2D, 0x32,
	0x35, 0x36, 0x19, 0x09, 0x5F, 0x84, 0xA5, 0x01,
	0x62, 0x42, 0x4C, 0x05, 0x58, 0x20, 0x07, 0x06,
	0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x0F, 0x0E,
	0x0D, 0x0C, 0x0B, 0x0A, 0x09, 0x08, 0x17, 0x16,
	0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x1F, 0x1E,
	0x1D, 0x1C, 0x1B, 0x1A, 0x19, 0x18, 0x04, 0x65,
	0x33, 0x2E, 0x34, 0x2E, 0x32, 0x02, 0x58, 0x20,
	0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00,
	0x0F, 0x0E, 0x0D, 0x0C, 0x0B, 0x0A, 0x09, 0x08,
	0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10,
	0x1F, 0x1E, 0x1D, 0x1C, 0x1B, 0x1A, 0x19, 0x18,
	0x06, 0x74, 0x54, 0x46, 0x2D, 0x4D, 0x5F, 0x53,
	0x48, 0x41, 0x32, 0x35, 0x36, 0x4D, 0x65, 0x6D,
	0x50, 0x72, 0x65, 0x58, 0x49, 0x50, 0xA4, 0x01,
	0x62, 0x4D, 0x31, 0x05, 0x58, 0x20, 0x07, 0x06,
	0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x0F, 0x0E,
	0x0D, 0x0C, 0x0B, 0x0A, 0x09, 0x08, 0x17, 0x16,
	0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x1F, 0x1E,
	0x1D, 0x1C, 0x1B, 0x1A, 0x19, 0x18, 0x04, 0x63,
	0x31, 0x2E, 0x32, 0x02, 0x58, 0x20, 0x07, 0x06,
	0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x0F, 0x0E,
	0x0D, 0x0C, 0x0B, 0x0A, 0x09, 0x08, 0x17, 0x16,
	0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x1F, 0x1E,
	0x1D, 0x1C, 0x1B, 0x1A, 0x19, 0x18, 0xA4, 0x01,
	0x62, 0x4D, 0x32, 0x05, 0x58, 0x20, 0x07, 0x06,
	0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x0F, 0x0E,
	0x0D, 0x0C, 0x0B, 0x0A, 0x09, 0x08, 0x17, 0x16,
	0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x1F, 0x1E,
	0x1D, 0x1C, 0x1B, 0x1A, 0x19, 0x18, 0x04, 0x65,
	0x31, 0x2E, 0x32, 0x2E, 0x33, 0x02, 0x58, 0x20,
	0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00,
	0x0F, 0x0E, 0x0D, 0x0C, 0x0B, 0x0A, 0x09, 0x08,
	0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10,
	0x1F, 0x1E, 0x1D, 0x1C, 0x1B, 0x1A, 0x19, 0x18,
	0xA4, 0x01, 0x62, 0x4D, 0x33, 0x05, 0x58, 0x20,
	0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00,
	0x0F, 0x0E, 0x0D, 0x0C, 0x0B, 0x0A, 0x09, 0x08,
	0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10,
	0x1F, 0x1E, 0x1D, 0x1C, 0x1B, 0x1A, 0x19, 0x18,
	0x04, 0x61, 0x31, 0x02, 0x58, 0x20, 0x07, 0x06,
	0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x0F, 0x0E,
	0x0D, 0x0C, 0x0B, 0x0A, 0x09, 0x08, 0x17, 0x16,
	0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x1F, 0x1E,
	0x1D, 0x1C, 0x1B, 0x1A, 0x19, 0x18, 0x19, 0x09,
	0x60, 0x6C, 0x77, 0x68, 0x61, 0x74, 0x65, 0x76,
	0x65, 0x72, 0x2E, 0x63, 0x6F, 0x6D, 0x58, 0x60,
	0xE6, 0xB6, 0x38, 0x4F, 0xAE, 0x3F, 0x6E, 0x67,
	0xF5, 0xD4, 0x97, 0x4B, 0x3F, 0xFD, 0x0A, 0xFA,
	0x1D, 0xF0, 0x2F, 0x73, 0xB8, 0xFF, 0x5F, 0x02,
	0xC0, 0x0F, 0x40, 0xAC, 0xF3, 0xA2, 0x9D, 0xB5,
	0x31, 0x50, 0x16, 0x4F, 0xFA, 0x34, 0x3D, 0x0E,
	0xAF, 0xE0, 0xD0, 0xD1, 0x6C, 0xF0, 0x9D, 0xC1,
	0x01, 0x42, 0xA2, 0x3C, 0xCE, 0xD4, 0x4A, 0x59,
	0xDC, 0x29, 0x0A, 0x30, 0x93, 0x5F, 0xB4, 0x98,
	0x61, 0xBA, 0xE3, 0x91, 0x22, 0x95, 0x24, 0xF4,
	0xAE, 0x47, 0x93, 0xD3, 0x84, 0xA3, 0x76, 0xD0,
	0xC1, 0x26, 0x96, 0x53, 0xA3, 0x60, 0x3F, 0x6C,
	0x75, 0x96, 0x90, 0x6A, 0xF9, 0x4E, 0xDA, 0x30
};

psa_status_t
rss_delegated_attest_get_delegated_key(uint8_t   ecc_curve,
				       uint32_t  key_bits,
				       uint8_t  *key_buf,
				       size_t    key_buf_size,
				       size_t   *key_size,
				       uint32_t  hash_algo)
{
	(void)ecc_curve;
	(void)key_bits;
	(void)hash_algo;

	if (key_buf_size < sizeof(delegated_key)) {
		return PSA_ERROR_BUFFER_TOO_SMALL;
	}

	(void)memcpy(key_buf, delegated_key, sizeof(delegated_key));
	*key_size = sizeof(delegated_key);

	return PSA_SUCCESS;
}
psa_status_t
rss_delegated_attest_get_token(const uint8_t *dak_pub_hash,
			       size_t         dak_pub_hash_size,
			       uint8_t       *token_buf,
			       size_t         token_buf_size,
			       size_t        *token_size)
{
	(void)dak_pub_hash;
	(void)dak_pub_hash_size;

	if (token_buf_size < sizeof(platform_token)) {
		return PSA_ERROR_BUFFER_TOO_SMALL;
	}

	(void)memcpy(token_buf, platform_token, sizeof(platform_token));
	*token_size = sizeof(platform_token);

	return PSA_SUCCESS;
}
#endif /* !PLAT_RSS_NOT_SUPPORTED */