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Diffstat (limited to 'src/libstrongswan/plugins/openssl/openssl_util.h')
-rw-r--r--src/libstrongswan/plugins/openssl/openssl_util.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/libstrongswan/plugins/openssl/openssl_util.h b/src/libstrongswan/plugins/openssl/openssl_util.h
index 25c692a1a..ce2a9e109 100644
--- a/src/libstrongswan/plugins/openssl/openssl_util.h
+++ b/src/libstrongswan/plugins/openssl/openssl_util.h
@@ -66,6 +66,15 @@ bool openssl_bn_cat(int len, BIGNUM *a, BIGNUM *b, chunk_t *chunk);
*/
bool openssl_bn_split(chunk_t chunk, BIGNUM *a, BIGNUM *b);
+/**
+ * Exports the given bignum (assumed to be a positive number) to a chunk in
+ * two's complement format (i.e. a zero byte is added if the MSB is set).
+ *
+ * @param bn the BIGNUM to export
+ * @param chunk the chunk (data gets allocated)
+ * @return TRUE on success, FALSE otherwise
+ */
+bool openssl_bn2chunk(BIGNUM *bn, chunk_t *chunk);
/**
* Allocate a chunk using the i2d function of a given object