hmac

hmac模块 对密码加密,可以加盐 import hmac m=hmac.new(b'abc') #加盐 m.update(b'123456') print(m.hexdigest()) # 注意hmac模块只接受二进制数据的加密 # abc 123 456 --> 8c7498982f41b93eb0ce8216b48ba21d # abc 123456 --> 8c7498982f41b93eb0ce8216b48ba21d # a 1234556 --> 3e391a1d7bf574cec59679244a2904fe 如果要保证hmac模块最终结果一致，必须保证： hmac.new括号内指定的初始key一样 无论update多少次，校验的内容累加到一起是一样的内容 来源： https://www.cnblogs.com/aden668/p/11366071.html

I need to generate a hash using HMAC SHA256. I am using the following code in Java. I need an equivalent code in Objective-C. javax.crypto.Mac mac = javax.crypto.Mac.getInstance(type); javax.crypto.spec.SecretKeySpec secret = new javax.crypto.spec.SecretKeySpec(key.getBytes(), type); mac.init(secret); byte[] digest = mac.doFinal(value.getBytes()); StringBuilder sb = new StringBuilder(digest.length * 2); String s=""; for (byte b: digest) { s = Integer.toHexString(b); if (s.length() == 1) { sb.append('0'); } sb.append(s); } return sb.toString(); Key = YARJSuwP5Oo6/r47LczzWjUx/T8ioAJpUK2YfdI

I'm looking at implementing an app getting Twitter authorization via Oauth in Java. The first step is getting a request token . Here is a Python example for app engine. To test my code, I am running Python and checking output with Java. Here is an example of Python generating a Hash-Based Message Authentication Code (HMAC): #!/usr/bin/python from hashlib import sha1 from hmac import new as hmac key = "qnscAdgRlkIhAUPY44oiexBKtQbGY0orf7OV1I50" message = "foo" print "%s" % hmac(key, message, sha1).digest().encode('base64')[:-1] Output: $ ./foo.py +3h2gpjf4xcynjCGU5lbdMBwGOc= How does one

The very basic issue all developers face: Whenever user submits the form, the password is sent via network and it must be protected. The site I develop for doesn't have HTTPS. Neither does the owner want to buy a SSL certificate, nor is he interested in a self-signed one. So I want to protect the password sent via HTTP using Javascript when submitting form. To eager downvoters: How to send password securely over HTTP? DOES NOT give any sensible solution and I am in another situation. If I use MD5, one can reverse that password string. What about nonce/HMAC? Any available Javascript library for

using .NET and C# i need to provide an integrity string using HMAC SHA512 to a PHP server . Using in C# : Encoding encoding = Encoding.UTF8; byte[] keyByte = encoding.GetBytes(key); HMACSHA512 hmacsha512 = new HMACSHA512(keyByte); byte[] messageBytes = encoding.GetBytes(message); byte[] hashmessage = hmacsha512.ComputeHash(messageBytes); return(ByteToString(hashmessage).toUpper()); But it doesn't match with PHP hash_hmac() PHP code : $hmac = strtoupper(hash_hmac($pbx_hash, $msg, $binKey)); I try to change encoding in C# (utf8, ASCII,Unicode) Without success. I've tried many solution found on