Modifier and Type | Class and Description |
---|---|
static class |
AuthenticatedSafes.Template
A Template class for decoding an AuthenticatedSafes from its
BER encoding.
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Modifier and Type | Field and Description |
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static int |
DEFAULT_ITERATIONS
The default number of hash iterations (1) when performing PBE keygen.
|
static PBEAlgorithm |
DEFAULT_KEY_GEN_ALG
The default PBE key generation algorithm: SHA-1 with RC2 40-bit CBC.
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Constructor and Description |
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AuthenticatedSafes()
Default constructor, creates an empty AuthenticatedSafes.
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AuthenticatedSafes(SEQUENCE sequence)
Creates an AuthenticatedSafes from a SEQUENCE of ContentInfo.
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Modifier and Type | Method and Description |
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void |
addEncryptedSafeContents(PBEAlgorithm keyGenAlg,
Password password,
byte[] salt,
int iterationCount,
SEQUENCE safeContents)
Encrypts a SafeContents and adds it to the AuthenticatedSafes.
|
void |
addSafeContents(SEQUENCE safeContents)
Appends an unencrypted SafeContents to the end of the AuthenticatedSafes.
|
void |
encode(java.io.OutputStream ostream)
Write this value's DER encoding to an output stream using
its own base tag.
|
void |
encode(Tag implicitTag,
java.io.OutputStream ostream)
Write this value's DER encoding to an output stream using
an implicit tag.
|
SEQUENCE |
getSafeContentsAt(Password password,
int index)
Returns the SafeContents at the given index in the AuthenticatedSafes,
decrypting it if necessary.
|
SEQUENCE |
getSequence()
Returns the raw SEQUENCE which constitutes this
AuthenticatedSafes.
|
int |
getSize()
Returns the size of the sequence, which is the number of SafeContents
in this AuthenticatedSafes.
|
Tag |
getTag()
Returns the base tag for this type, not counting any tags
that may be imposed on it by its context.
|
static AuthenticatedSafes.Template |
getTemplate() |
boolean |
safeContentsIsEncrypted(int index)
Returns true if the SafeContents at the given index in the
AuthenticatedSafes is encrypted.
|
public static final int DEFAULT_ITERATIONS
public static final PBEAlgorithm DEFAULT_KEY_GEN_ALG
public AuthenticatedSafes()
public AuthenticatedSafes(SEQUENCE sequence)
sequence
- A non-null sequence of ContentInfo.public SEQUENCE getSequence()
public int getSize()
public boolean safeContentsIsEncrypted(int index)
getSafeContentsAt
when accessing
this SafeContents.public SEQUENCE getSafeContentsAt(Password password, int index) throws java.lang.IllegalStateException, CryptoManager.NotInitializedException, java.security.NoSuchAlgorithmException, InvalidBERException, java.io.IOException, java.security.InvalidKeyException, java.security.InvalidAlgorithmParameterException, TokenException, IllegalBlockSizeException, BadPaddingException
The algorithm used to extract encrypted SafeContents does not conform to version 1.0 of the spec. Instead, it conforms to the draft 1.0 spec, because this is what Communicator and MSIE seem to conform to. This looks like an implementation error that has become firmly entrenched to preserve interoperability. The draft spec dictates that the encrypted content in the EncryptedContentInfo is the DER encoding of a SafeContents. This is simple enough. The 1.0 final spec says that the SafeContents is wrapped in a ContentInfo, then the ContentInfo is BER encoded, then the value octets (not the tag or length) are encrypted. No wonder people stayed with the old way.
password
- The password to use to decrypt the SafeContents if
it is encrypted. If the SafeContents is known to not be encrypted,
this parameter can be null. If the password is incorrect, the
decoding will fail somehow, probably with an InvalidBERException,
BadPaddingException, or IllegalBlockSizeException.index
- The index of the SafeContents to extract.java.lang.IllegalArgumentException
- If no password was provided,
but the SafeContents is encrypted.java.lang.IllegalStateException
CryptoManager.NotInitializedException
java.security.NoSuchAlgorithmException
InvalidBERException
java.io.IOException
java.security.InvalidKeyException
java.security.InvalidAlgorithmParameterException
TokenException
IllegalBlockSizeException
BadPaddingException
public void addSafeContents(SEQUENCE safeContents)
public void addEncryptedSafeContents(PBEAlgorithm keyGenAlg, Password password, byte[] salt, int iterationCount, SEQUENCE safeContents) throws CryptoManager.NotInitializedException, java.security.InvalidKeyException, java.security.InvalidAlgorithmParameterException, TokenException, java.security.NoSuchAlgorithmException, BadPaddingException, IllegalBlockSizeException
keyGenAlg
- The algorithm used to generate a key from the password.
Must be a PBE algorithm. DEFAULT_KEY_GEN_ALG
is
usually fine here. It only provides 40-bit security, but if the
private key material is packaged in its own
EncryptedPrivateKeyInfo, the security of the SafeContents
is not as important.password
- The password to use to generate the encryption key
and IV.salt
- The salt to use to generate the key and IV. If null is
passed in, the salt will be generated randomly, which is usually
the right thing to do.iterationCount
- The number of hash iterations to perform when
generating the key and IV. Use DEFAULT_ITERATIONS unless
you want to be clever.safeContents
- A SafeContents, which is a SEQUENCE of SafeBags.
Each element of the sequence must in fact be an instance of
SafeBag
.CryptoManager.NotInitializedException
java.security.InvalidKeyException
java.security.InvalidAlgorithmParameterException
TokenException
java.security.NoSuchAlgorithmException
BadPaddingException
IllegalBlockSizeException
public Tag getTag()
ASN1Value
public void encode(java.io.OutputStream ostream) throws java.io.IOException
ASN1Value
public void encode(Tag implicitTag, java.io.OutputStream ostream) throws java.io.IOException
ASN1Value
public static AuthenticatedSafes.Template getTemplate()