diff options
Diffstat (limited to 'src/libsodium/crypto_stream/salsa2012')
5 files changed, 127 insertions, 0 deletions
diff --git a/src/libsodium/crypto_stream/salsa2012/checksum b/src/libsodium/crypto_stream/salsa2012/checksum new file mode 100644 index 0000000..f801d9e --- /dev/null +++ b/src/libsodium/crypto_stream/salsa2012/checksum @@ -0,0 +1 @@ +ecc758f200061c3cc770b25797da73583548d4f90f69a967fbbe1a6d94d1705c diff --git a/src/libsodium/crypto_stream/salsa2012/ref/api.h b/src/libsodium/crypto_stream/salsa2012/ref/api.h new file mode 100644 index 0000000..0efe8b8 --- /dev/null +++ b/src/libsodium/crypto_stream/salsa2012/ref/api.h @@ -0,0 +1,10 @@ + +#include "crypto_stream_salsa2012.h" + +#define crypto_stream crypto_stream_salsa2012 +#define crypto_stream_xor crypto_stream_salsa2012_xor +#define crypto_stream_KEYBYTES crypto_stream_salsa2012_KEYBYTES +#define crypto_stream_NONCEBYTES crypto_stream_salsa2012_NONCEBYTES +#define crypto_stream_IMPLEMENTATION crypto_stream_salsa2012_IMPLEMENTATION +#define crypto_stream_VERSION crypto_stream_salsa2012_VERSION + diff --git a/src/libsodium/crypto_stream/salsa2012/ref/stream_salsa2012.c b/src/libsodium/crypto_stream/salsa2012/ref/stream_salsa2012.c new file mode 100644 index 0000000..793adaa --- /dev/null +++ b/src/libsodium/crypto_stream/salsa2012/ref/stream_salsa2012.c @@ -0,0 +1,51 @@ +/* +version 20080913 +D. J. Bernstein +Public domain. +*/ + +#include "api.h" +#include "crypto_core_salsa2012.h" + +typedef unsigned int uint32; + +static const unsigned char sigma[16] = { + 'e', 'x', 'p', 'a', 'n', 'd', ' ', '3', '2', '-', 'b', 'y', 't', 'e', ' ', 'k' +}; + +int crypto_stream( + unsigned char *c,unsigned long long clen, + const unsigned char *n, + const unsigned char *k +) +{ + unsigned char in[16]; + unsigned char block[64]; + unsigned long long i; + unsigned int u; + + if (!clen) return 0; + + for (i = 0;i < 8;++i) in[i] = n[i]; + for (i = 8;i < 16;++i) in[i] = 0; + + while (clen >= 64) { + crypto_core_salsa2012(c,in,k,sigma); + + u = 1; + for (i = 8;i < 16;++i) { + u += (unsigned int) in[i]; + in[i] = u; + u >>= 8; + } + + clen -= 64; + c += 64; + } + + if (clen) { + crypto_core_salsa2012(block,in,k,sigma); + for (i = 0;i < clen;++i) c[i] = block[i]; + } + return 0; +} diff --git a/src/libsodium/crypto_stream/salsa2012/ref/xor_salsa2012.c b/src/libsodium/crypto_stream/salsa2012/ref/xor_salsa2012.c new file mode 100644 index 0000000..5970ca4 --- /dev/null +++ b/src/libsodium/crypto_stream/salsa2012/ref/xor_salsa2012.c @@ -0,0 +1,54 @@ +/* +version 20080913 +D. J. Bernstein +Public domain. +*/ + +#include "api.h" +#include "crypto_core_salsa2012.h" + +typedef unsigned int uint32; + +static const unsigned char sigma[16] = { + 'e', 'x', 'p', 'a', 'n', 'd', ' ', '3', '2', '-', 'b', 'y', 't', 'e', ' ', 'k' +}; + +int crypto_stream_xor( + unsigned char *c, + const unsigned char *m,unsigned long long mlen, + const unsigned char *n, + const unsigned char *k +) +{ + unsigned char in[16]; + unsigned char block[64]; + unsigned long long i; + unsigned int u; + + if (!mlen) return 0; + + for (i = 0;i < 8;++i) in[i] = n[i]; + for (i = 8;i < 16;++i) in[i] = 0; + + while (mlen >= 64) { + crypto_core_salsa2012(block,in,k,sigma); + for (i = 0;i < 64;++i) c[i] = m[i] ^ block[i]; + + u = 1; + for (i = 8;i < 16;++i) { + u += (unsigned int) in[i]; + in[i] = u; + u >>= 8; + } + + mlen -= 64; + c += 64; + m += 64; + } + + if (mlen) { + crypto_core_salsa2012(block,in,k,sigma); + for (i = 0;i < mlen;++i) c[i] = m[i] ^ block[i]; + } + return 0; +} diff --git a/src/libsodium/crypto_stream/salsa2012/stream_salsa2012_api.c b/src/libsodium/crypto_stream/salsa2012/stream_salsa2012_api.c new file mode 100644 index 0000000..3b5685f --- /dev/null +++ b/src/libsodium/crypto_stream/salsa2012/stream_salsa2012_api.c @@ -0,0 +1,11 @@ +#include "crypto_stream_salsa2012.h" + +size_t +crypto_stream_salsa2012_keybytes(void) { + return crypto_stream_salsa2012_KEYBYTES; +} + +size_t +crypto_stream_salsa2012_noncebytes(void) { + return crypto_stream_salsa2012_NONCEBYTES; +} |