X-Git-Url: http://git.ithinksw.org/ITFoundation.git/blobdiff_plain/4ad564f9120afcd0f1ca486c501f72c93a8cdfb1..0238d96a35ba0c9d948e03672cce0506f8a57b46:/ITCategory-NSData.m

diff --git a/ITCategory-NSData.m b/ITCategory-NSData.m
index 0f45f68..e35fa45 100644
--- a/ITCategory-NSData.m
+++ b/ITCategory-NSData.m
@@ -1,9 +1,32 @@
 #import "ITCategory-NSData.h"
+#import <openssl/bio.h>
+#import <openssl/evp.h>
 #import <openssl/md5.h>
 #import <openssl/sha.h>
 
 @implementation NSData (ITFoundationCategory)
 
++ (id)dataWithBase64:(NSString *)base64 {
+	return [[[self alloc] initWithBase64:base64] autorelease];
+}
+
+- (id)initWithBase64:(NSString *)base64 {
+	BIO *mem = BIO_new_mem_buf((void *)[base64 cString], [base64 cStringLength]);
+	BIO *b64 = BIO_new(BIO_f_base64());
+	BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
+	mem = BIO_push(b64, mem);
+
+	NSMutableData *data = [NSMutableData data];
+	char inbuf[512];
+	int inlen;
+	while ((inlen = BIO_read(mem, inbuf, sizeof(inbuf))) > 0) {
+		[data appendBytes:inbuf length:inlen];
+	}
+
+	BIO_free_all(mem);
+	return [self initWithData:data];
+}
+
 - (NSString *)hexadecimalRepresentation {
 	int dataLength = [self length];
 	int stringLength = dataLength * 2;
@@ -19,6 +42,23 @@
 	return [NSString stringWithCString:hexString length:stringLength];
 }
 
+- (NSString *)base64 {
+	BIO *mem = BIO_new(BIO_s_mem());
+    BIO *b64 = BIO_new(BIO_f_base64());
+	BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
+	mem = BIO_push(b64, mem);
+    
+    BIO_write(mem, [self bytes], [self length]);
+    BIO_flush(mem);
+    
+    char *base64Char;
+    long base64Length = BIO_get_mem_data(mem, &base64Char);
+    NSString *base64String = [NSString stringWithCString:base64Char length:base64Length];
+    
+    BIO_free_all(mem);
+    return base64String;
+}
+
 - (NSData *)MD5 {
 	int length = 16;
 	unsigned char digest[length];