diff options
| author | Sylvain Munaut <tnt@246tNt.com> | 2014-06-16 14:59:30 +0200 |
|---|---|---|
| committer | Sylvain Munaut <tnt@246tNt.com> | 2014-06-16 14:59:30 +0200 |
| commit | 579a7103a1738df11009d75b7bf02559e711a1cb (patch) | |
| tree | 186b527c1c18f02b52beb0f6876fb9afe98c834f /include/osmocom/gsm | |
| parent | e2c1390d1badbce07945d19ead64704ad4056309 (diff) | |
gsm: Add Kasumi cipher implementation
Submitted-by: Max <max.suraev@fairwaves.co>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Diffstat (limited to 'include/osmocom/gsm')
| -rw-r--r-- | include/osmocom/gsm/kasumi.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/include/osmocom/gsm/kasumi.h b/include/osmocom/gsm/kasumi.h new file mode 100644 index 00000000..8ecf65f6 --- /dev/null +++ b/include/osmocom/gsm/kasumi.h @@ -0,0 +1,48 @@ +/* + * KASUMI header + * + * See kasumi.c for details + * The parameters are described in TS 135 202. + */ + +#pragma once + +#include <stdint.h> + +/*! \brief Single iteration of KASUMI cipher + * \param[in] P Block, 64 bits to be processed in this round + * \param[in] KLi1 Expanded subkeys + * \param[in] KLi2 Expanded subkeys + * \param[in] KOi1 Expanded subkeys + * \param[in] KOi2 Expanded subkeys + * \param[in] KOi3 Expanded subkeys + * \param[in] KIi1 Expanded subkeys + * \param[in] KIi2 Expanded subkeys + * \param[in] KIi3 Expanded subkeys + * \returns processed block of 64 bits + */ +uint64_t _kasumi(uint64_t P, const uint16_t *KLi1, const uint16_t *KLi2, const uint16_t *KOi1, const uint16_t *KOi2, const uint16_t *KOi3, const uint16_t *KIi1, const uint16_t *KIi2, const uint16_t *KIi3); + +/*! \brief Implementation of the KGCORE algorithm (used by A5/3, A5/4, GEA3, GEA4 and ECSD) + * \param[in] CA + * \param[in] cb + * \param[in] cc + * \param[in] cd + * \param[in] ck 8-bytes long key + * \param[out] co cl-dependent + * \param[in] cl + */ +void _kasumi_kgcore(uint8_t CA, uint8_t cb, uint32_t cc, uint8_t cd, const uint8_t *ck, uint8_t *co, uint16_t cl); + +/*! \brief Expand key into set of subkeys - see TS 135 202 for details + * \param[in] key (128 bits) as array of bytes + * \param[out] KLi1 Expanded subkeys + * \param[out] KLi2 Expanded subkeys + * \param[out] KOi1 Expanded subkeys + * \param[out] KOi2 Expanded subkeys + * \param[out] KOi3 Expanded subkeys + * \param[out] KIi1 Expanded subkeys + * \param[out] KIi2 Expanded subkeys + * \param[out] KIi3 Expanded subkeys + */ +void _kasumi_key_expand(const uint8_t *key, uint16_t *KLi1, uint16_t *KLi2, uint16_t *KOi1, uint16_t *KOi2, uint16_t *KOi3, uint16_t *KIi1, uint16_t *KIi2, uint16_t *KIi3); |