Package org.mozilla.jss.crypto
Class SecretDecoderRing
- java.lang.Object
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- org.mozilla.jss.crypto.SecretDecoderRing
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public class SecretDecoderRing extends java.lang.Object
This is a special-purpose interface for NSS. It is used for encrypting data with a secret key stored in the NSS key database (which is in turn protected with a password). It thus provides a quick, convenient way to encrypt stuff your application wants to keep around for its own use: for example, the list of web passwords stored in the web browser.A dedicated key is used to encrypt all SecretDecoderRing data. The same key is used for all SDR data, and not for any other data. This key will be generated the first time it is needed.
The cipher used is DES3-EDE (Triple-DES) in CBC mode. The ciphertext is DER-encoded in the following ASN.1 data structure:
SEQUENCE { keyid OCTET STRING, alg AlgorithmIdentifier, ciphertext OCTET STRING }
You must set the password on the Internal Key Storage Token (aka software token, key3.db) before you use the SecretDecoderRing.
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Field Summary
Fields Modifier and Type Field Description static java.lang.String
encodingFormat
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Constructor Summary
Constructors Constructor Description SecretDecoderRing()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description byte[]
decrypt(byte[] ciphertext)
Decrypts the given ciphertext with the Secret Decoder Ring key stored in the NSS key database.java.lang.String
decryptToString(byte[] ciphertext)
Decrypts the given ciphertext with the Secret Decoder Ring key stored in the NSS key database, returning the original plaintext string.byte[]
encrypt(byte[] plaintext)
Encrypts the given plaintext with the Secret Decoder Ring key stored in the NSS key database.byte[]
encrypt(java.lang.String plaintext)
Encrypts the given plaintext string with the Secret Decoder Ring key stored in the NSS key database.
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Field Detail
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encodingFormat
public static final java.lang.String encodingFormat
- See Also:
- Constant Field Values
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Method Detail
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encrypt
public byte[] encrypt(byte[] plaintext) throws TokenException
Encrypts the given plaintext with the Secret Decoder Ring key stored in the NSS key database.- Throws:
TokenException
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encrypt
public byte[] encrypt(java.lang.String plaintext) throws TokenException
Encrypts the given plaintext string with the Secret Decoder Ring key stored in the NSS key database.- Throws:
TokenException
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decrypt
public byte[] decrypt(byte[] ciphertext) throws TokenException
Decrypts the given ciphertext with the Secret Decoder Ring key stored in the NSS key database.- Throws:
TokenException
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decryptToString
public java.lang.String decryptToString(byte[] ciphertext) throws TokenException
Decrypts the given ciphertext with the Secret Decoder Ring key stored in the NSS key database, returning the original plaintext string.- Throws:
TokenException
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