diff options
author | Micah Anderson <micah@riseup.net> | 2014-08-11 13:49:21 -0400 |
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committer | Micah Anderson <micah@riseup.net> | 2014-08-11 13:49:21 -0400 |
commit | 2e59f9740a29439df7c7a56cf0ae83dec3081d31 (patch) | |
tree | d5e7c4e74c9a0f1ea999327d2e68b1dd27be00e0 /src/libsodium/crypto_box/crypto_box_easy.c |
initial import of debian version from mentors0.6.1
Diffstat (limited to 'src/libsodium/crypto_box/crypto_box_easy.c')
-rw-r--r-- | src/libsodium/crypto_box/crypto_box_easy.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/libsodium/crypto_box/crypto_box_easy.c b/src/libsodium/crypto_box/crypto_box_easy.c new file mode 100644 index 0000000..7224f24 --- /dev/null +++ b/src/libsodium/crypto_box/crypto_box_easy.c @@ -0,0 +1,60 @@ + +#include "crypto_box.h" +#include "crypto_secretbox.h" +#include "utils.h" + +int +crypto_box_detached(unsigned char *c, unsigned char *mac, + const unsigned char *m, unsigned long long mlen, + const unsigned char *n, const unsigned char *pk, + const unsigned char *sk) +{ + unsigned char k[crypto_box_BEFORENMBYTES]; + int ret; + + (void) sizeof(int[crypto_box_BEFORENMBYTES >= + crypto_secretbox_KEYBYTES ? 1 : -1]); + crypto_box_beforenm(k, pk, sk); + ret = crypto_secretbox_detached(c, mac, m, mlen, n, k); + sodium_memzero(k, sizeof k); + + return ret; +} + +int +crypto_box_easy(unsigned char *c, const unsigned char *m, + unsigned long long mlen, const unsigned char *n, + const unsigned char *pk, const unsigned char *sk) +{ + return crypto_box_detached(c + crypto_box_MACBYTES, c, m, mlen, n, + pk, sk); +} + +int +crypto_box_open_detached(unsigned char *m, const unsigned char *c, + const unsigned char *mac, + unsigned long long clen, const unsigned char *n, + const unsigned char *pk, const unsigned char *sk) +{ + unsigned char k[crypto_box_BEFORENMBYTES]; + int ret; + + crypto_box_beforenm(k, pk, sk); + ret = crypto_secretbox_open_detached(m, c, mac, clen, n, k); + sodium_memzero(k, sizeof k); + + return ret; +} + +int +crypto_box_open_easy(unsigned char *m, const unsigned char *c, + unsigned long long clen, const unsigned char *n, + const unsigned char *pk, const unsigned char *sk) +{ + if (clen < crypto_box_MACBYTES) { + return -1; + } + return crypto_box_open_detached(m, c + crypto_box_MACBYTES, c, + clen - crypto_box_MACBYTES, + n, pk, sk); +} |