what base64 encoding

Base64 introduction base64 is one of the most common encoding methods used to transmit 8-bit bytes of code on the network. For details, refer to rfc2045 ~ Rfc2049, which has the mime detailed specification. Base64 requires that each three 8-bit

Base64 is one of the most common coding methods for transmitting 8Bit byte code on the network, and you can view the rfc2045~rfc2049, which has a MIME detail specification. BASE64 requires converting every three 8Bit bytes to four 6Bit bytes (3*8 = 4

I. Brief description MD5: All called message digest algorithm 5 (Information digest algorithm), can be encrypted, but not decrypted, belong to one-way encryption, usually used for file verification BASE64: The 8-bit byte of any sequence is

1.BASE64 Introduction Base64 is a representation of binary data based on 64 printable characters. Base64 encoding generally has the following two uses: A) All binaries can thus be converted to printable text encoding (all become ASCII printable

From Http://hi.baidu.com/studyphp Function authcode ($ string, $ operation, $ key = ''){ # String is the string to be encrypted or decrypted # Decryption during Operation decode $ Key = MD5 ($ key? $ Key: $ globals ['discuz _ auth_key ']);$

What is base64? According to rfc2045, base64 is defined as base64 content Transfer Encoding. It is designed to describe the 8-bit bytes of any sequence as a form that is not easily recognized by people. (The base64 content-transfer-encoding is

Base64 is one of the most common encoding methods for transmitting 8Bit bytes of code on the network, and before understanding BASE64 encoding, you should understand several basic concepts: bits, bytes.Bit: bit is the smallest unit of data in the

You should be a senior online reader, and the younger brother is brave enough to ask, when surfing the internet, in addition to soaking the MM, bumping the Forum, throwing bricks ...... In addition, what activities are most carried out? By the way,

the full BASE64 definition is visible in RFC 1421 and RFC 2045. The encoded data is slightly longer than the original data, and is the original 4/3. In e-mail, according to RFC 822 , a carriage return line is required for every 76 characters. You

1.MD5MD5 is message-digest algorithm 5 (Information-Digest algorithm 5), which is used to ensure complete and consistent information transmission. is one of the widely used hashing algorithms (also translation digest algorithm, hashing algorithm),

Base64 is a method that uses 64 characters to represent arbitrary binary data.exe jpg When we open these files with Notepad, pdf we all see a lot of garbled characters, because the binaries contain many character that can't be displayed and printed,

# This is a learning note for the Liaoche teacher Python tutorialBase64 is a method that uses 64 characters to represent arbitrary binary data.Base64 is the most common binary encoding method used as a binary-to-string conversion1, the principle of

The following is reproduced from: http://blog.csdn.net/wodeyuer125/article/details/45150223 Developers are sure to be familiar with Base64 coding, and whether or not they have a clear understanding of it is not necessarily. In fact, Base64 is

developers are sure to be familiar with Base64 coding, and whether or not they have a clear understanding of it is not necessarily. In fact, Base64 is simply no longer easy, and if it's understood or ambiguous, it shouldn't be. About Base64, take a

Base64 encoding is very common in e-mails. For emails such as Foxmail and outlook, the user agent performs SMTP verification when sending emails, that is, entering the username and password in base64 encoding format for verification, the body

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[Reprint] mime mail encoding method Posted on spring flower club read (399) Comments (0) EDIT favorites

Base64 is one of the most common coding methods for transmitting 8Bit byte code on the network, and you can view the rfc2045~rfc2049, which has a MIME detail specification. The BASE64 encoding can be used to pass longer identity information in an

Usage:OpenSSL ENC-ciphername [-in Filename] [-out filename] [-pass Arg] [-E][-D] [-A] [-K Password] [-kfile filename] [-K key] [-IV] [-p] [-P] [-bufsize number] [-Debug] Note: Symmetric encryption algorithm tool. It can encrypt/decrypt data using

Base64 is one of the most common encoding methods used to transmit 8-bit code on the network. For details, refer to rfc2045 ~ Rfc2049, which has the mime detailed specification.Base64 requires that each three 8-bit bytes be converted into four 6-bit