The "block length" for CFB mode was incorrectly coded as 1 all the time. It

should be the number of feedback bits expressed in bytes. For CFB1 mode set
this to 1 by rounding up to the nearest multiple of 8.

diff --git a/crypto/evp/evp_locl.h b/crypto/evp/evp_locl.h
index ef6c432538aaf5230e0382282867cc41ea39a6e9..72105b0fe2b0a712b61d69d6135d8704e1144a5b 100644 (file)
--- a/crypto/evp/evp_locl.h
+++ b/crypto/evp/evp_locl.h
@@ -127,9 +127,9 @@ BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
                             iv_len, cbits, flags, init_key, cleanup, \
                             set_asn1, get_asn1, ctrl) \
-BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
-                 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
-                 get_asn1, ctrl)
+BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, \
+                       (cbits + 7)/8, key_len, iv_len, \
+               flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 
 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
                             iv_len, cbits, flags, init_key, cleanup, \