1 /*
2 * Copyright (c) 2001-2022, Arm Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include "mbedtls/build_info.h"
8
9 #if defined(MBEDTLS_POLY1305_C)
10 #include "mbedtls/poly1305.h"
11 #include "mbedtls/error.h"
12 #include "poly.h"
13 #include "mbedtls/platform_util.h"
14 #include "chacha_driver.h"
15 #include "cc_pal_abort.h"
16 #include "cc_pal_mem.h"
17 #include "cc_pal_types.h"
18
19 #if defined(MBEDTLS_SELF_TEST)
20 #if defined(MBEDTLS_PLATFORM_C)
21 #include "mbedtls/platform.h"
22 #else
23 #define mbedtls_printf printf
24 #endif /* MBEDTLS_PLATFORM_C */
25 #endif /* MBEDTLS_SELF_TEST */
26
27 #if defined(MBEDTLS_POLY1305_ALT)
28
29
mbedtls_poly1305_init(mbedtls_poly1305_context * ctx)30 void mbedtls_poly1305_init( mbedtls_poly1305_context *ctx )
31 {
32 CC_UNUSED_PARAM(ctx);
33 return;
34 }
35
mbedtls_poly1305_free(mbedtls_poly1305_context * ctx)36 void mbedtls_poly1305_free( mbedtls_poly1305_context *ctx )
37 {
38 CC_UNUSED_PARAM(ctx);
39 return;
40 }
41
42 /* Cryptocell only supports integrated poly1305 operations */
mbedtls_poly1305_starts(mbedtls_poly1305_context * ctx,const unsigned char key[32])43 int mbedtls_poly1305_starts( mbedtls_poly1305_context *ctx,
44 const unsigned char key[32] )
45 {
46 CC_UNUSED_PARAM(ctx);
47 CC_UNUSED_PARAM(key);
48 return MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED;
49 }
50
51 /* Cryptocell only supports integrated poly1305 operations */
mbedtls_poly1305_update(mbedtls_poly1305_context * ctx,const unsigned char * input,size_t ilen)52 int mbedtls_poly1305_update( mbedtls_poly1305_context *ctx,
53 const unsigned char *input,
54 size_t ilen )
55 {
56 CC_UNUSED_PARAM(ctx);
57 CC_UNUSED_PARAM(input);
58 CC_UNUSED_PARAM(ilen);
59 return MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED;
60 }
61
62 /* Cryptocell only supports integrated poly1305 operations */
mbedtls_poly1305_finish(mbedtls_poly1305_context * ctx,unsigned char mac[16])63 int mbedtls_poly1305_finish( mbedtls_poly1305_context *ctx,
64 unsigned char mac[16] )
65 {
66 CC_UNUSED_PARAM(ctx);
67 CC_UNUSED_PARAM(mac);
68 return MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED;
69 }
70
mbedtls_poly1305_mac(const unsigned char key[32],const unsigned char * input,size_t ilen,unsigned char mac[16])71 int mbedtls_poly1305_mac( const unsigned char key[32],
72 const unsigned char *input,
73 size_t ilen,
74 unsigned char mac[16] )
75 {
76 int rc;
77 mbedtls_poly_key pKey;
78 mbedtls_poly_mac macRes;
79
80 // Verify inputs
81 if (key == NULL) {
82 return MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA;
83 }
84 if ((mac == NULL) || ((input == NULL) ^ (ilen == 0)) || (ilen > CC_MAX_UINT32_VAL)) {
85 return MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA;
86 }
87
88 CC_PalMemCopy((unsigned char *)pKey, key, sizeof(mbedtls_poly_key));
89
90 rc = PolyMacCalc(pKey, NULL, 0, input, ilen, macRes, false);
91 if (rc != 0) {
92 return MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED;
93 }
94
95 CC_PalMemCopy(mac, (unsigned char *)macRes, sizeof(mbedtls_poly_mac));
96
97 return ( 0 );
98 }
99
100
101 #endif /* !MBEDTLS_POLY1305_ALT */
102
103 #endif /* !MBEDTLS_POLY1305_C */
104
