base64: fix for unsigned chars (e.g. ARM).

[ccan] / ccan / crypto / xtea / xtea.c

diff --git a/ccan/crypto/xtea/xtea.c b/ccan/crypto/xtea/xtea.c
index 28435d6a97c09588e8642ba3f29efdfb304599b2..43ce55733e7fc4ae4042515720bd6c00c7f2df19 100644 (file)
--- a/ccan/crypto/xtea/xtea.c
+++ b/ccan/crypto/xtea/xtea.c
@@ -11,8 +11,9 @@ uint64_t xtea_encipher(const struct xtea_secret *secret, uint64_t v)
 {
        const uint32_t delta=0x9E3779B9;
        uint32_t v0=(v>>32), v1=v, sum=0;
+       int i;
 
-       for (int i=0; i < NUM_DOUBLE_ROUNDS; i++) {
+       for (i=0; i < NUM_DOUBLE_ROUNDS; i++) {
                v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + secret->u.u32[sum & 3]);
                sum += delta;
                v1 += (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + secret->u.u32[(sum>>11) & 3]);
@@ -24,8 +25,9 @@ uint64_t xtea_decipher(const struct xtea_secret *secret, uint64_t e)
 {
        const uint32_t delta=0x9E3779B9;
        uint32_t v0=(e>>32), v1=e, sum=delta*NUM_DOUBLE_ROUNDS;
+       int i;
 
-       for (int i=0; i < NUM_DOUBLE_ROUNDS; i++) {
+       for (i=0; i < NUM_DOUBLE_ROUNDS; i++) {
                v1 -= (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + secret->u.u32[(sum>>11) & 3]);
                sum -= delta;
                v0 -= (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + secret->u.u32[sum & 3]);