Base64 - Revision history

Jflopezfernandez: Added page to the Examples and C level categories

2019-08-09T15:34:33Z

Added page to the Examples and C level categories

2017-06-27T15:58:55Z

EVP API

2015-11-22T17:05:50Z

base64 uses PEM 80 characters per line

2015-11-22T17:04:06Z

2015-10-17T11:34:56Z

openssl base64 specificities

2013-04-01T10:02:23Z

2013-04-01T09:59:55Z

2013-03-24T19:33:55Z

2013-03-24T19:32:57Z

2013-03-24T19:32:24Z

← Older revision		Revision as of 15:58, 27 June 2017
Line 27:		Line 27:
	crypto/evp/bio_b64.C		crypto/evp/bio_b64.C

		+	If you need to encode a block of data, use the '''<tt>EVP_EncodeBlock</tt>''' function, example:
		+	<pre>
		+	unsigned char sourceData[16] = {0x30,0x82,0x07,0x39,0x30,0x82,0x05,0x21,0xA0,0x03,0x02,0x01,0x02,0x02,0x04,0x00};
		+	char encodedData[100];
		+	EVP_EncodeBlock((unsigned char *)encodedData, sourceData, 16);
		+	printf(encodedData);
		+	</pre>

	=== WARNINGS ===		=== WARNINGS ===

← Older revision		Revision as of 17:05, 22 November 2015
Line 44:		Line 44:

	Base64 itself does not impose a line split, but openssl uses it in PEM context hence enforce that base64 content is splitted by lines with a maximum of 80 characters.		Base64 itself does not impose a line split, but openssl uses it in PEM context hence enforce that base64 content is splitted by lines with a maximum of 80 characters.
		+
		+	With C code it is possible to ask to disregard lines breaks : BIO_set_flags(d,BIO_FLAGS_BASE64_NO_NL);


	[[Category:Encoding]]		[[Category:Encoding]]

@@ Line 1: / Line 1: @@
 Encode binary information 8 bits into ASCII.
-This is PEM base encode, it exists other base64 encoding scheme like this uses by crypt.
+This is PEM base encode, it exists other base64 encoding scheme like this used by crypt.
 == Algorithm ==

@@ Line 1: / Line 1: @@
 Encode binary information 8 bits into ASCII.
 == Algorithm ==
@@ Line 15: / Line 17: @@
 Since it encodes by group of 3 bytes, when last group of 3 bytes miss one byte then = is used, when it miss 2 bytes then == is used for padding.
 == Openssl command ==
@@ Line 26: / Line 26: @@
 crypto/evp/encode.c
 crypto/evp/bio_b64.C
 [[Category:Encoding]]

@@ Line 1: / Line 1: @@
 Encode binary information 8 bits into ASCII.
 x 8 bits binary are concatenated to form a 24bits word that is split in 4 x 6bits each being translating into an ascii value using a character ordered in following list :
@@ Line 15: / Line 18: @@
 Base64 itself does not impose a line split, but openssl uses it in PEM context hence enforce that base64 content is splitted by lines with a maximum of 80 characters.
-h1. Openssl command
+== Openssl command ==
 base64 or -enc base64 can be used to decode lines see [[Command_Line_Utilities]]
 [[Category:Encoding]]

← Older revision		Revision as of 09:59, 1 April 2013
Line 14:		Line 14:

	Base64 itself does not impose a line split, but openssl uses it in PEM context hence enforce that base64 content is splitted by lines with a maximum of 80 characters.		Base64 itself does not impose a line split, but openssl uses it in PEM context hence enforce that base64 content is splitted by lines with a maximum of 80 characters.
		+
		+	h1. Openssl command
		+
		+	base64 or -enc base64 can be used to decode lines see [[Command_Line_Utilities]]

	[[Category:Encoding]]		[[Category:Encoding]]

@@ Line 4: / Line 4: @@
 <pre>
 ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/
 0000000000111111111122222222223333333333444444444455555555556666
 0123456789012345678901234567890123456789012345678901234567890123