Bouncy Castle Cryptography Library 1.49

org.bouncycastle.crypto.tls
Class AlertDescription

java.lang.Object
  extended by org.bouncycastle.crypto.tls.AlertDescription

public class AlertDescription
extends java.lang.Object

RFC 5246 7.2.


Field Summary
static short access_denied
          A valid certificate was received, but when access control was applied, the sender decided not to proceed with negotiation.
static short bad_certificate
          A certificate was corrupt, contained signatures that did not verify correctly, etc.
static short bad_certificate_hash_value
          This alert is sent by servers when a certificate hash does not match a client provided certificate_hash.
static short bad_certificate_status_response
          This alert is sent by clients that receive an invalid certificate status response (see Section 3.6).
static short bad_record_mac
          This alert is returned if a record is received with an incorrect MAC.
static short certificate_expired
          A certificate has expired or is not currently valid.
static short certificate_revoked
          A certificate was revoked by its signer.
static short certificate_unknown
          Some other (unspecified) issue arose in processing the certificate, rendering it unacceptable.
static short certificate_unobtainable
          This alert is sent by servers who are unable to retrieve a certificate chain from the URL supplied by the client (see Section 3.3).
static short close_notify
          This message notifies the recipient that the sender will not send any more messages on this connection.
static short decode_error
          A message could not be decoded because some field was out of the specified range or the length of the message was incorrect.
static short decompression_failure
          The decompression function received improper input (e.g., data that would expand to excessive length).
static short decrypt_error
          A handshake cryptographic operation failed, including being unable to correctly verify a signature or validate a Finished message.
static short decryption_failed
          This alert was used in some earlier versions of TLS, and may have permitted certain attacks against the CBC mode [CBCATT].
static short export_restriction
          This alert was used in some earlier versions of TLS.
static short handshake_failure
          Reception of a handshake_failure alert message indicates that the sender was unable to negotiate an acceptable set of security parameters given the options available.
static short illegal_parameter
          A field in the handshake was out of range or inconsistent with other fields.
static short insufficient_security
          Returned instead of handshake_failure when a negotiation has failed specifically because the server requires ciphers more secure than those supported by the client.
static short internal_error
          An internal error unrelated to the peer or the correctness of the protocol (such as a memory allocation failure) makes it impossible to continue.
static short no_certificate
          This alert was used in SSLv3 but not any version of TLS.
static short no_renegotiation
          Sent by the client in response to a hello request or by the server in response to a client hello after initial handshaking.
static short protocol_version
          The protocol version the client has attempted to negotiate is recognized but not supported.
static short record_overflow
          A TLSCiphertext record was received that had a length more than 2^14+2048 bytes, or a record decrypted to a TLSCompressed record with more than 2^14+1024 bytes.
static short unexpected_message
          An inappropriate message was received.
static short unknown_ca
          A valid certificate chain or partial chain was received, but the certificate was not accepted because the CA certificate could not be located or couldn't be matched with a known, trusted CA.
static short unknown_psk_identity
          If the server does not recognize the PSK identity, it MAY respond with an "unknown_psk_identity" alert message.
static short unrecognized_name
          This alert is sent by servers that receive a server_name extension request, but do not recognize the server name.
static short unsupported_certificate
          A certificate was of an unsupported type.
static short unsupported_extension
          Sent by clients that receive an extended server hello containing an extension that they did not put in the corresponding client hello.
static short user_canceled
          This handshake is being canceled for some reason unrelated to a protocol failure.
 
Constructor Summary
AlertDescription()
           
 
Method Summary
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

close_notify

public static final short close_notify
This message notifies the recipient that the sender will not send any more messages on this connection. The session becomes unresumable if any connection is terminated without proper close_notify messages with level equal to warning.

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Constant Field Values

unexpected_message

public static final short unexpected_message
An inappropriate message was received. This alert is always fatal and should never be observed in communication between proper implementations.

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Constant Field Values

bad_record_mac

public static final short bad_record_mac
This alert is returned if a record is received with an incorrect MAC. This alert also MUST be returned if an alert is sent because a TLSCiphertext decrypted in an invalid way: either it wasn't an even multiple of the block length, or its padding values, when checked, weren't correct. This message is always fatal and should never be observed in communication between proper implementations (except when messages were corrupted in the network).

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Constant Field Values

decryption_failed

public static final short decryption_failed
This alert was used in some earlier versions of TLS, and may have permitted certain attacks against the CBC mode [CBCATT]. It MUST NOT be sent by compliant implementations.

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Constant Field Values

record_overflow

public static final short record_overflow
A TLSCiphertext record was received that had a length more than 2^14+2048 bytes, or a record decrypted to a TLSCompressed record with more than 2^14+1024 bytes. This message is always fatal and should never be observed in communication between proper implementations (except when messages were corrupted in the network).

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Constant Field Values

decompression_failure

public static final short decompression_failure
The decompression function received improper input (e.g., data that would expand to excessive length). This message is always fatal and should never be observed in communication between proper implementations.

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Constant Field Values

handshake_failure

public static final short handshake_failure
Reception of a handshake_failure alert message indicates that the sender was unable to negotiate an acceptable set of security parameters given the options available. This is a fatal error.

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Constant Field Values

no_certificate

public static final short no_certificate
This alert was used in SSLv3 but not any version of TLS. It MUST NOT be sent by compliant implementations.

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Constant Field Values

bad_certificate

public static final short bad_certificate
A certificate was corrupt, contained signatures that did not verify correctly, etc.

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Constant Field Values

unsupported_certificate

public static final short unsupported_certificate
A certificate was of an unsupported type.

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Constant Field Values

certificate_revoked

public static final short certificate_revoked
A certificate was revoked by its signer.

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Constant Field Values

certificate_expired

public static final short certificate_expired
A certificate has expired or is not currently valid.

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Constant Field Values

certificate_unknown

public static final short certificate_unknown
Some other (unspecified) issue arose in processing the certificate, rendering it unacceptable.

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Constant Field Values

illegal_parameter

public static final short illegal_parameter
A field in the handshake was out of range or inconsistent with other fields. This message is always fatal.

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Constant Field Values

unknown_ca

public static final short unknown_ca
A valid certificate chain or partial chain was received, but the certificate was not accepted because the CA certificate could not be located or couldn't be matched with a known, trusted CA. This message is always fatal.

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Constant Field Values

access_denied

public static final short access_denied
A valid certificate was received, but when access control was applied, the sender decided not to proceed with negotiation. This message is always fatal.

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Constant Field Values

decode_error

public static final short decode_error
A message could not be decoded because some field was out of the specified range or the length of the message was incorrect. This message is always fatal and should never be observed in communication between proper implementations (except when messages were corrupted in the network).

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Constant Field Values

decrypt_error

public static final short decrypt_error
A handshake cryptographic operation failed, including being unable to correctly verify a signature or validate a Finished message. This message is always fatal.

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Constant Field Values

export_restriction

public static final short export_restriction
This alert was used in some earlier versions of TLS. It MUST NOT be sent by compliant implementations.

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Constant Field Values

protocol_version

public static final short protocol_version
The protocol version the client has attempted to negotiate is recognized but not supported. (For example, old protocol versions might be avoided for security reasons.) This message is always fatal.

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Constant Field Values

insufficient_security

public static final short insufficient_security
Returned instead of handshake_failure when a negotiation has failed specifically because the server requires ciphers more secure than those supported by the client. This message is always fatal.

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Constant Field Values

internal_error

public static final short internal_error
An internal error unrelated to the peer or the correctness of the protocol (such as a memory allocation failure) makes it impossible to continue. This message is always fatal.

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Constant Field Values

user_canceled

public static final short user_canceled
This handshake is being canceled for some reason unrelated to a protocol failure. If the user cancels an operation after the handshake is complete, just closing the connection by sending a close_notify is more appropriate. This alert should be followed by a close_notify. This message is generally a warning.

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Constant Field Values

no_renegotiation

public static final short no_renegotiation
Sent by the client in response to a hello request or by the server in response to a client hello after initial handshaking. Either of these would normally lead to renegotiation; when that is not appropriate, the recipient should respond with this alert. At that point, the original requester can decide whether to proceed with the connection. One case where this would be appropriate is where a server has spawned a process to satisfy a request; the process might receive security parameters (key length, authentication, etc.) at startup, and it might be difficult to communicate changes to these parameters after that point. This message is always a warning.

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Constant Field Values

unsupported_extension

public static final short unsupported_extension
Sent by clients that receive an extended server hello containing an extension that they did not put in the corresponding client hello. This message is always fatal.

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Constant Field Values

certificate_unobtainable

public static final short certificate_unobtainable
This alert is sent by servers who are unable to retrieve a certificate chain from the URL supplied by the client (see Section 3.3). This message MAY be fatal - for example if client authentication is required by the server for the handshake to continue and the server is unable to retrieve the certificate chain, it may send a fatal alert.

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Constant Field Values

unrecognized_name

public static final short unrecognized_name
This alert is sent by servers that receive a server_name extension request, but do not recognize the server name. This message MAY be fatal.

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Constant Field Values

bad_certificate_status_response

public static final short bad_certificate_status_response
This alert is sent by clients that receive an invalid certificate status response (see Section 3.6). This message is always fatal.

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Constant Field Values

bad_certificate_hash_value

public static final short bad_certificate_hash_value
This alert is sent by servers when a certificate hash does not match a client provided certificate_hash. This message is always fatal.

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Constant Field Values

unknown_psk_identity

public static final short unknown_psk_identity
If the server does not recognize the PSK identity, it MAY respond with an "unknown_psk_identity" alert message.

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Constant Field Values
Constructor Detail

AlertDescription

public AlertDescription()

Bouncy Castle Cryptography Library 1.49