- Generate Secret Key From String Java
- Generate Secret Key From String Music
- Generate Secret Key From String Music
I recently went through the processing of creating SDKs for an in house API. The API required signing every REST request with HMAC SHA256 signatures. Those signatures then needed to be converted to base64. Amazon S3 uses base64 strings for their hashes. There are some good reasons to use base64 encoding. See the stackOverflow question What is the use of base 64 encoding?
Below are some simplified HMAC SHA 256 solutions. They should all output
qnR8UCqJggD55PohusaBNviGoOJ67HC6Btry4qXLVZc=
given the values of secret
and Message
. Take notice of the capital M. The hashed message is case sensitive.- Xanxys.net / TOTP Generator What's this? This site generates TOTP (Time-based One Time Password) QR code completely in your browser (you can check source to verify it). Secret key(hex string): Secret key(hex array): Technical References. TOTP: Time-Based One-Time Password Algorithm (RFC 6238).
- You don't want to use.toString. Notice that SecretKey inherits from java.security.Key, which itself inherits from Serializable. So the key here (no pun intended) is to serialize the key into a ByteArrayOutputStream, get the byte array and store it into the db. The reverse process would be to get the byte.
Jump to an implementation:
Javascript HMAC SHA256
HMAC Generator / Tester Tool. Computes a Hash-based message authentication code (HMAC) using a secret key. A HMAC is a small set of data that helps authenticate the nature of message; it protects the integrity and the authenticity of the message. OpenSSL is well known for its ability to generate certificates but it can also be used to generate random data. Generates 32 random bytes (256bits) in a base64 encoded output: openssl rand -base64 32 Plaintext. Generates 32 random characters (256bits): openssl rand 32. Django Secret Key Generator. About Django Secret Key Generator. The Django Secret Key Generator is used to generate a new SECRETKEY that you can put in your settings.py module.
Run the code online with this jsfiddle.Dependent upon an open source js library called http://code.google.com/p/crypto-js/.
PHP HMAC SHA256
PHP has built in methods for hash_hmac (PHP 5) and base64_encode (PHP 4, PHP 5) resulting in nooutside dependencies. Say what you want about PHP but they have the cleanest code for this example.
Java HMAC SHA256
Dependent on Apache Commons Codec to encode in base64.
Groovy HMAC SHA256
It is mostly java code but there are some slight differences. Adapted from Dev Takeout - Groovy HMAC/SHA256 representation.
C# HMAC SHA256
Objective C and Cocoa HMAC SHA256
Most of the code required was for converting to bae64 and working the NSString and NSData data types.
Go programming language - Golang HMAC SHA256
Ruby HMAC SHA256
Requires openssl and base64.
Python (2.7) HMAC SHA256
Tested with Python 2.7.6. Also, be sure not to name your python demo script the same as one of the imported libraries.
Python (3.7) HMAC SHA256
Tested with Python 3.7.0. Also, be sure not to name your python demo script the same as one of the imported libraries. Thanks to @biswapanda.
Perl HMAC SHA256
See Digest::SHA documentation. By convention, the Digest modules do not pad their Base64 output. To fix this you can test the length of the hash and append equal signs '=' until it is the length is a multiple of 4. We will use a modulus function below.
Dart HMAC SHA256
Dependent upon the Dart crypto package.
Swift HMAC SHA256
I have not verified but see this stackOverflow post
Rust
Take a look at the alco/rust-digest repository for Rust (lang) guidance. I have not verified yet.
Powershell (Windows) HMAC SHA256
Mostly wrapping of .NET libraries but useful to see it in powershell's befuddling syntax. See code as gist
Shell (Bash etc) HMAC SHA256
Using openssl. Credit to @CzechJiri
--> Converts encrypted standard strings to secure strings. It can also convert plain text to secure strings. It is used with ConvertFrom-SecureString and Read-Host.
Syntax
Description
The ConvertTo-SecureString cmdlet converts encrypted standard strings into secure strings.It can also convert plain text to secure strings.It is used with ConvertFrom-SecureString and Read-Host.The secure string created by the cmdlet can be used with cmdlets or functions that require a parameter of type SecureString.The secure string can be converted back to an encrypted, standard string using the ConvertFrom-SecureString cmdlet.This enables it to be stored in a file for later use.
If the standard string being converted was encrypted with ConvertFrom-SecureString using a specified key, that same key must be provided as the value of the Key or SecureKey parameter of the ConvertTo-SecureString cmdlet.
Note
Note that per DotNet, thecontents of a SecureString are not encrypted on non-Windows systems.
Examples
![Secret key for pokemon platinum Secret key for pokemon platinum](/uploads/1/2/6/0/126061459/510615945.png)
Example 1: Convert a secure string to an encrypted string
This example shows how to create a secure string from user input, convert the secure string to an encrypted standard string, and then convert the encrypted standard string back to a secure string.
Generate Secret Key From String Java
The first command uses the AsSecureString parameter of the Read-Host cmdlet to create a secure string.After you enter the command, any characters that you type are converted into a secure string and then saved in the $Secure variable.
The second command displays the contents of the $Secure variable.Because the $Secure variable contains a secure string, PowerShell displays only the System.Security.SecureString type.
The third command uses the ConvertFrom-SecureString cmdlet to convert the secure string in the $Secure variable into an encrypted standard string.It saves the result in the $Encrypted variable.
The fourth command displays the encrypted string in the value of the $Encrypted variable.
The fifth command uses the ConvertTo-SecureString cmdlet to convert the encrypted standard string in the $Encrypted variable back into a secure string.It saves the result in the $Secure2 variable.The sixth command displays the value of the $Secure2 variable.The SecureString type indicates that the command was successful.
Example 2: Create a secure string from an encrypted string in a file
This example shows how to create a secure string from an encrypted standard string that is saved in a file.
The first command uses the AsSecureString parameter of the Read-Host cmdlet to create a secure string.After you enter the command, any characters that you type are converted into a secure string and then saved in the $Secure variable.
The second command uses the ConvertFrom-SecureString cmdlet to convert the secure string in the $Secure variable into an encrypted standard string by using the specified key.The contents are saved in the $Encrypted variable.
The third command uses a pipeline operator (|) to send the value of the $Encrypted variable to the Set-Content cmdlet, which saves the value in the Encrypted.txt file.
The fourth command uses the Get-Content cmdlet to get the encrypted standard string in the Encrypted.txt file.The command uses a pipeline operator to send the encrypted string to the ConvertTo-SecureString cmdlet, which converts it to a secure string by using the specified key.The results are saved in the $Secure2 variable.
Example 3: Convert a plain text string to a secure string
This command converts the plain text string P@ssW0rD!into a secure string and stores the result in the $Secure_String_Pwd variable.To use the AsPlainText parameter, the Force parameter must also be included in the command.
Parameters
Specifies a plain text string to convert to a secure string.The secure string cmdlets help protect confidential text.The text is encrypted for privacy and is deleted from computer memory after it is used.If you use this parameter to provide plain text as input, the system cannot protect that input in this manner.To use this parameter, you must also specify the Force parameter.
Type: | SwitchParameter |
Position: | 1 |
Default value: | None |
Accept pipeline input: | False |
Accept wildcard characters: | False |
Confirms that you understand the implications of using the AsPlainText parameter and still want to use it.
Type: | SwitchParameter |
Position: | 2 |
Default value: | None |
Accept pipeline input: | False |
Accept wildcard characters: | False |
Specifies the encryption key to use when converting a secure string into an encrypted standard string.Valid key lengths are 16, 24, and 32 bytes.
Type: | Byte[] |
Position: | Named |
Default value: | None |
Accept pipeline input: | False |
Accept wildcard characters: | False |
Specifies the encryption key to use when converting a secure string into an encrypted standard string.The key must be provided in the format of a secure string.The secure string is converted to a byte array before being used as the key.Valid key lengths are 16, 24, and 32 bytes.
Type: | SecureString |
Position: | 1 |
Default value: | None |
Accept pipeline input: | False |
Accept wildcard characters: | False |
Specifies the string to convert to a secure string.
Type: | String |
Position: | 0 |
Default value: | None |
Accept pipeline input: | True (ByValue) |
Accept wildcard characters: | False |
Inputs
You can pipe a standard encrypted string to ConvertTo-SecureString.
Outputs
Generate Secret Key From String Music
ConvertTo-SecureString returns a SecureString object.