tmp+=index<<i*6#找不到,不用移位相加了#替换字符为序号ret.extend(tmp.to_bytes(3,"big"))returnbytes(ret.rstrip(b"\x00"))#把右边的\x00去掉,不可变#base64的decodetxt ="TWFu"#txt = "TWE="#txt = "TQ="#txt = "TWFuTWE="#txt = "TWFuTQ="txt =txt.encode()print(txt)print(base6...
在这里主要想讲讲如何才能获得最好的编码/解码性能,EncdDecd提供了EncodeStream/DecodeString, EncodeString/DecodeString两对函数,如果你使用EncodeString/DecodeString,这没有什麽可争议,效率是死的,如果你使用了EncodeStream/DecodeStream,这里面可大有文章了. 先来看看两个函数的声明: procedure EncodeStream(Input, Out...
Use Linux command-line commands and OpenSSL to encrypt and base64-encode the policy statement for CloudFront signed URLs.
BIO*context = BIO_new_mem_buf((void*)[data bytes], [data length]);//Tell the context to encode base64context =BIO_push(command, context);//Encode all the dataNSMutableData *outputData =[NSMutableData data];#defineBUFFSIZE 256intlen;charinbuf[BUFFSIZE];while((len = BIO_read(context, i...
mov al, byte ptr [eax + offset Base64_Encode_Table] ror edx, 8 add dl, al pop eax ;获得原 eax shl eax, 6 loopd @B rol edx, 16 mov buff, edx ;编码后的 4 个字符 invoke WriteFile, fOut, offset buff, 4, offset t, NULL .endif invoke CloseHandle, fIn invoke...
bs='you'.encode('utf-8')print(base64.b64encode(bs).decode())bs='yo'.encode('utf-8')print(base64.b64encode(bs).decode())bs='y'.encode('utf-8')print(base64.b64encode(bs).decode()) 1. 2. 3. 4. 5. 6. 7. 8. 9. ...
returnbase64.urlsafe_b64encode("".join(enc).encode).decode 定义一个函数Decode,它接受用于编码和解码的密钥以及消息。定义一个空列表并解码消息。迭代到消息的长度并将操作的模数设置为索引并将其值存储在key_c中。附加 Unicode 字符串消息解码的字符,如下所示。返回解码后的字符串。
PHP command line script to encode an image to a base64 script suitable for JavaScript HTML, or CSS to use. Usage Encoding an image on the command line php encoder.php image.png > image.txt HTML usage example <img src="contents of the image.txt" alt="example image" /> ...
For node.js, you can use this command to install: npm install hi-base64 Usage Browser You could use like this: base64.encode('String to encode');base64.decode('Base64 string to decode');base64.decode.bytes('Base64 string to decode as bytes'); ...
I particularly liked their entry on how to Base64 encode a file. This is something that I need occassionally and I can never remember how to do it. I was about to include it as-is into my profile and decided that there was a better way to do this. ...