Add missing declaration of chacha_ivsetup_96().

[meshlink] / src / crypto.c

diff --git a/src/crypto.c b/src/crypto.c
index 2e2fa5386555c02b1e8c5632ee597c6c52bd513d..1bdd8b0745597bd5a35f73bfefa18a7d10db3dca 100644 (file)
--- a/src/crypto.c
+++ b/src/crypto.c
@@ -29,8 +29,11 @@ static int random_fd = -1;
 
 void crypto_init(void) {
        random_fd = open("/dev/urandom", O_RDONLY);
-       if(random_fd < 0)
+
+       if(random_fd < 0) {
                random_fd = open("/dev/random", O_RDONLY);
+       }
+
        if(random_fd < 0) {
                fprintf(stderr, "Could not open source of random numbers: %s\n", strerror(errno));
                abort();
@@ -41,6 +44,26 @@ void crypto_exit(void) {
        close(random_fd);
 }
 
+void randomize(void *out, size_t outlen) {
+       char *ptr = out;
+
+       while(outlen) {
+               size_t len = read(random_fd, ptr, outlen);
+
+               if(len <= 0) {
+                       if(errno == EAGAIN || errno == EINTR) {
+                               continue;
+                       }
+
+                       fprintf(stderr, "Could not read random numbers: %s\n", strerror(errno));
+                       abort();
+               }
+
+               ptr += len;
+               outlen -= len;
+       }
+}
+
 #else
 
 #include <wincrypt.h>