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| author | Tobias Brunner <tobias@strongswan.org> | 2017-09-25 18:06:40 +0200 |
|---|---|---|
| committer | Tobias Brunner <tobias@strongswan.org> | 2017-11-08 16:48:10 +0100 |
| commit | 883e7fcd65659ffc8540229934a39795d8411e13 (patch) | |
| tree | 8770340834262976013f936062681c467cde6c07 /src | |
| parent | 3ce8b0556a33679f410073ef4577cc78f4282cbb (diff) | |
| download | strongswan-883e7fcd65659ffc8540229934a39795d8411e13.tar.bz2 strongswan-883e7fcd65659ffc8540229934a39795d8411e13.tar.xz | |
xof: Add helper to determine MGF1 XOF type from hash algorithm
Diffstat (limited to 'src')
| -rw-r--r-- | src/libstrongswan/crypto/xofs/xof.c | 29 | ||||
| -rw-r--r-- | src/libstrongswan/crypto/xofs/xof.h | 9 |
2 files changed, 38 insertions, 0 deletions
diff --git a/src/libstrongswan/crypto/xofs/xof.c b/src/libstrongswan/crypto/xofs/xof.c index 1e9c2834b..791598588 100644 --- a/src/libstrongswan/crypto/xofs/xof.c +++ b/src/libstrongswan/crypto/xofs/xof.c @@ -1,4 +1,5 @@ /* + * Copyright (C) 2017 Tobias Brunner * Copyright (C) 2016 Andreas Steffen * HSR Hochschule fuer Technik Rapperswil * @@ -25,3 +26,31 @@ ENUM(ext_out_function_names, XOF_UNDEFINED, XOF_CHACHA20, "XOF_CHACHA20" ); +/* + * Described in header + */ +ext_out_function_t xof_mgf1_from_hash_algorithm(hash_algorithm_t alg) +{ + switch (alg) + { + case HASH_SHA1: + return XOF_MGF1_SHA1; + case HASH_SHA256: + return XOF_MGF1_SHA256; + case HASH_SHA512: + return XOF_MGF1_SHA512; + case HASH_SHA224: + case HASH_SHA384: + case HASH_IDENTITY: + case HASH_UNKNOWN: + case HASH_MD2: + case HASH_MD4: + case HASH_MD5: + case HASH_SHA3_224: + case HASH_SHA3_256: + case HASH_SHA3_384: + case HASH_SHA3_512: + break; + } + return XOF_UNDEFINED; +} diff --git a/src/libstrongswan/crypto/xofs/xof.h b/src/libstrongswan/crypto/xofs/xof.h index 8c9ae0131..83c9ab857 100644 --- a/src/libstrongswan/crypto/xofs/xof.h +++ b/src/libstrongswan/crypto/xofs/xof.h @@ -1,4 +1,5 @@ /* + * Copyright (C) 2017 Tobias Brunner * Copyright (C) 2016 Andreas Steffen * HSR Hochschule fuer Technik Rapperswil * @@ -111,4 +112,12 @@ struct xof_t { void (*destroy)(xof_t *this); }; +/** + * Determine an MGF1 XOF type for the given hash algorithm. + * + * @param alg hash algorithm to map + * @return MGF1 XOF type if available, XOF_UNDEFINED otherwise + */ +ext_out_function_t xof_mgf1_from_hash_algorithm(hash_algorithm_t alg); + #endif /** XOF_H_ @}*/ |