diff options
Diffstat (limited to 'lib/includes/hicn/protocol/ah.h')
| -rw-r--r-- | lib/includes/hicn/protocol/ah.h | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/lib/includes/hicn/protocol/ah.h b/lib/includes/hicn/protocol/ah.h index a59a5051a..36fd7d509 100644 --- a/lib/includes/hicn/protocol/ah.h +++ b/lib/includes/hicn/protocol/ah.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2017-2019 Cisco and/or its affiliates. + * Copyright (c) 2021 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: @@ -35,16 +35,19 @@ typedef struct { - u8 nh; // (to match with reserved in IPSEC AH) - u8 payloadlen; // Len of signature/HMAC in 4-bytes words + u8 nh; // To match with reserved in IPSEC AH + // Length of the signature field. Note that the signature might be smaller + // than the field: the actual size is computed from the field size and + // signaturePadding. + u8 payloadlen; union { u16 reserved; struct { - u8 validationAlgorithm; // As defined in parc_SignerAlgorithm.h - u8 unused; // Unused (to match with reserved in IPSEC AH) + u8 validationAlgorithm; + u8 signaturePadding; }; }; union @@ -60,12 +63,12 @@ typedef struct u32 timestamp_as_u32[2]; }; // ICV would follow - u8 keyId[32]; // Hash of the pub key + u8 keyId[32]; // Hash of pub key /* 44 B + validationPayload */ - u8 validationPayload[0]; // Holds the signature + u8 validationPayload[0]; // Holds the signature } _ah_header_t; -#define AH_HDRLEN sizeof(_ah_header_t) +#define AH_HDRLEN sizeof (_ah_header_t) static_assert (EXPECTED_AH_HDRLEN == AH_HDRLEN, "Size of AH Struct does not match its expected size."); |