## 0.4.0 (Unreleased)

DEPRECATIONS/BREAKING CHANGES:

 * Policy Name Casing: Policy names are now normalized to lower-case on write, helping prevent accidental case mismatches. For backwards compatibility, policy names are not normalized when reading or deleting. [GH-676]

IMPROVEMENTS:

 * init: Base64-encoded PGP keys can be used with the CLI for `init` and `rekey` operations [GH-653]
 * core: Tokens can now renew themselves [GH-455]

BUG FIXES:

 * core: Fix upgrade path for leases created in `generic` prior to 0.3 [GH-673]

## 0.3.1 (October 6, 2015)

SECURITY:

 * core: In certain failure scenarios, the full values of requests and responses would be logged [GH-665]

FEATURES:

 * **Settable Maximum Open Connections**: The `mysql` and `postgresql` backends now allow setting the number of maximum open connections to the database, which was previously capped to 2. [GH-661]
 * **Renewable Tokens for GitHub**: The `github` backend now supports specifying a TTL, enabling renewable tokens. [GH-664]

BUG FIXES:

 * dist: linux-amd64 distribution was dynamically linked [GH-656]
 * credential/github: Fix acceptance tests [GH-651]

MISC:

 * Various minor documentation fixes and improvements [GH-649] [GH-650] [GH-654] [GH-663]

## 0.3.0 (September 28, 2015)

DEPRECATIONS/BREAKING CHANGES:

Note: deprecations and breaking changes in upcoming releases are announced ahead of time on the "vault-tool" mailing list.

 * **Cookie Authentication Removed**: As of 0.3 the only way to authenticate is via the X-Vault-Token header. Cookie authentication was hard to properly test, could result in browsers/tools/applications saving tokens in plaintext on disk, and other issues. [GH-564]
 * **Terminology/Field Names**: Vault is transitioning from overloading the term "lease" to mean both "a set of metadata" and "the amount of time the metadata is valid". The latter is now being referred to as TTL (or "lease_duration" for backwards-compatibility); some parts of Vault have already switched to using "ttl" and others will follow in upcoming releases. In particular, the "token", "generic", and "pki" backends accept both "ttl" and "lease" but in 0.4 only "ttl" will be accepted. [GH-528]
 * **Downgrade Not Supported**: Due to enhancements in the storage subsytem, values written by Vault 0.3+ will not be able to be read by prior versions of Vault. There are no expected upgrade issues, however, as with all critical infrastructure it is recommended to back up Vault's physical storage before upgrading.

FEATURES:

 * **SSH Backend**: Vault can now be used to delegate SSH access to machines, via a (recommended) One-Time Password approach or by issuing dynamic keys. [GH-385]
 * **Cubbyhole Backend**: This backend works similarly to the "generic" backend but provides a per-token workspace. This enables some additional authentication workflows (especially for containers) and can be useful to applications to e.g. store local credentials while being restarted or upgraded, rather than persisting to disk. [GH-612]
 * **Transit Backend Improvements**: The transit backend now allows key rotation and datakey generation. For rotation, data encrypted with previous versions of the keys can still be decrypted, down to a (configurable) minimum previous version; there is a rewrap function for manual upgrades of ciphertext to newer versions. Additionally, the backend now allows generating and returning high-entropy keys of a configurable bitsize suitable for AES and other functions; this is returned wrapped by a named key, or optionally both wrapped and plaintext for immediate use. [GH-626]
 * **Global and Per-Mount Default/Max TTL Support**: You can now set the default and maximum Time To Live for leases both globally and per-mount. Per-mount settings override global settings. Not all backends honor these settings yet, but the maximum is a hard limit enforced outside the backend. See the documentation for "/sys/mounts/" for details on configuring per-mount TTLs. [GH-469]
 * **PGP Encryption for Unseal Keys**: When initializing or rotating Vault's master key, PGP/GPG public keys can now be provided. The output keys will be encrypted with the given keys, in order. [GH-570]
 * **Duo Multifactor Authentication Support**: Backends that support MFA can now use Duo as the mechanism. [GH-464]
 * **Performance Improvements**: Users of the "generic" backend will see a significant performance improvement as the backend no longer creates leases, although it does return TTLs (global/mount default, or set per-item) as before. [GH-631]
 * **Codebase Audit**: Vault's codebase was audited by iSEC. (The terms of the audit contract do not allow us to make the results public.) [GH-220]

IMPROVEMENTS:

 * audit: Log entries now contain a time field [GH-495]
 * audit: Obfuscated audit entries now use hmac-sha256 instead of sha1 [GH-627]
 * backends: Add ability for a cleanup function to be called on backend unmount [GH-608]
 * config: Allow specifying minimum acceptable TLS version [GH-447]
 * core: If trying to mount in a location that is already mounted, be more helpful about the error [GH-510]
 * core: Be more explicit on failure if the issue is invalid JSON [GH-553]
 * core: Tokens can now revoke themselves [GH-620]
 * credential/app-id: Give a more specific error when sending a duplicate POST to sys/auth/app-id [GH-392]
 * credential/github: Support custom API endpoints (e.g. for Github Enterprise) [GH-572]
 * credential/ldap: Add per-user policies and option to login with userPrincipalName [GH-420]
 * credential/token: Allow root tokens to specify the ID of a token being created from CLI [GH-502]
 * credential/userpass: Enable renewals for login tokens [GH-623]
 * scripts: Use /usr/bin/env to find Bash instead of hardcoding [GH-446]
 * scripts: Use godep for build scripts to use same environment as tests [GH-404]
 * secret/mysql: Allow reading configuration data [GH-529]
 * secret/pki: Split "allow_any_name" logic to that and "enforce_hostnames", to allow for non-hostname values (e.g. for client certificates) [GH-555]
 * storage/consul: Allow specifying certificates used to talk to Consul [GH-384]
 * storage/mysql: Allow SSL encrypted connections [GH-439]
 * storage/s3: Allow using temporary security credentials [GH-433]
 * telemetry: Put telemetry object in configuration to allow more flexibility [GH-419]
 * testing: Disable mlock for testing of logical backends so as not to require root [GH-479]

BUG FIXES:

 * audit/file: Do not enable auditing if file permissions are invalid [GH-550]
 * backends: Allow hyphens in endpoint patterns (fixes AWS and others) [GH-559]
 * cli: Fixed missing setup of client TLS certificates if no custom CA was provided
 * cli/read: Do not include a carriage return when using raw field output [GH-624]
 * core: Bad input data could lead to a panic for that session, rather than returning an error [GH-503]
 * core: Allow SHA2-384/SHA2-512 hashed certificates [GH-448]
 * core: Do not return a Secret if there are no uses left on a token (since it will be unable to be used) [GH-615]
 * core: Code paths that called lookup-self would decrement num_uses and potentially immediately revoke a token [GH-552]
 * core: Some /sys/ paths would not properly redirect from a standby to the leader [GH-499] [GH-551]
 * credential/aws: Translate spaces in a token's display name to avoid making IAM unhappy [GH-567]
 * credential/github: Integration failed if more than ten organizations or teams [GH-489]
 * credential/token: Tokens with sudo access to "auth/token/create" can now use root-only options [GH-629]
 * secret/cassandra: Work around backwards-incompatible change made in Cassandra 2.2 preventing Vault from properly setting/revoking leases [GH-549]
 * secret/mysql: Use varbinary instead of varchar to avoid InnoDB/UTF-8 issues [GH-522]
 * secret/postgres: Explicitly set timezone in connections [GH-597]
 * storage/etcd: Renew semaphore periodically to prevent leadership flapping [GH-606]
 * storage/zk: Fix collisions in storage that could lead to data unavailability [GH-411]

MISC:

 * Various documentation fixes and improvements [GH-412] [GH-474] [GH-476] [GH-482] [GH-483] [GH-486] [GH-508] [GH-568] [GH-574] [GH-586] [GH-590] [GH-591] [GH-592] [GH-595] [GH-613] [GH-637]
 * Less "armon" in stack traces [GH-453]
 * Sourcegraph integration [GH-456]

## 0.2.0 (July 13, 2015)

FEATURES:

 * **Key Rotation Support**: The `rotate` command can be used to rotate the
 master encryption key used to write data to the storage (physical) backend. [GH-277]
 * **Rekey Support**: Rekey can be used to rotate the master key and change
 the configuration of the unseal keys (number of shares, threshold required). [GH-277]
 * **New secret backend: `pki`**: Enable Vault to be a certificate authority and generate
   signed TLS certificates. [GH-310]
 * **New secret backend: `cassandra`**: Generate dynamic credentials for Cassandra [GH-363]
 * **New storage backend: `etcd`**: store physical data in etcd [GH-259] [GH-297]
 * **New storage backend: `s3`**: store physical data in S3. Does not support HA. [GH-242]
 * **New storage backend: `MySQL`**: store physical data in MySQL. Does not support HA. [GH-324]
 * `transit` secret backend supports derived keys for per-transaction unique keys [GH-399]

IMPROVEMENTS:

 * cli/auth: Enable `cert` method [GH-380]
 * cli/auth: read input from stdin [GH-250]
 * cli/read: Ability to read a single field from a secret [GH-257]
 * cli/write: Adding a force flag when no input required
 * core: allow time duration format in place of seconds for some inputs
 * core: audit log provides more useful information [GH-360]
 * core: graceful shutdown for faster HA failover
 * core: **change policy format** to use explicit globbing [GH-400]
 Any existing policy in Vault is automatically upgraded to avoid issues.
 All policy files must be updated for future writes. Adding the explicit glob
 character `*` to the path specification is all that is required.
 * core: policy merging to give deny highest precedence [GH-400]
 * credential/app-id: Protect against timing attack on app-id
 * credential/cert: Record the common name in the metadata [GH-342]
 * credential/ldap: Allow TLS verification to be disabled [GH-372]
 * credential/ldap: More flexible names allowed [GH-245] [GH-379] [GH-367]
 * credential/userpass: Protect against timing attack on password
 * credential/userpass: Use bcrypt for password matching
 * http: response codes improved to reflect error [GH-366]
 * http: the `sys/health` endpoint supports `?standbyok` to return 200 on standby [GH-389]
 * secret/app-id: Support deleting AppID and UserIDs [GH-200]
 * secret/consul: Fine grained lease control [GH-261]
 * secret/transit: Decouple raw key from key management endpoint [GH-355]
 * secret/transit: Upsert named key when encrypt is used [GH-355]
 * storage/zk: Support for HA configuration [GH-252]
 * storage/zk: Changing node representation. **Backwards incompatible**. [GH-416]

BUG FIXES:

 * audit/file: file removing TLS connection state
 * audit/syslog: fix removing TLS connection state
 * command/*: commands accepting `k=v` allow blank values
 * core: Allow building on FreeBSD [GH-365]
 * core: Fixed various panics when audit logging enabled
 * core: Lease renewal does not create redundant lease
 * core: fixed leases with negative duration [GH-354]
 * core: token renewal does not create child token
 * core: fixing panic when lease increment is null [GH-408]
 * credential/app-id: Salt the paths in storage backend to avoid information leak
 * credential/cert: Fixing client certificate not being requested
 * credential/cert: Fixing panic when no certificate match found [GH-361]
 * http: Accept PUT as POST for sys/auth
 * http: Accept PUT as POST for sys/mounts [GH-349]
 * http: Return 503 when sealed [GH-225]
 * secret/postgres: Username length is capped to exceeding limit
 * server: Do not panic if backend not configured [GH-222]
 * server: Explicitly check value of tls_diable [GH-201]
 * storage/zk: Fixed issues with version conflicts [GH-190]

MISC:

 * cli/path-help: renamed from `help` to avoid confusion

## 0.1.2 (May 11, 2015)

FEATURES:

  * **New physical backend: `zookeeper`**: store physical data in Zookeeper.
      HA not supported yet.
  * **New credential backend: `ldap`**: authenticate using LDAP credentials.

IMPROVEMENTS:

  * core: Auth backends can store internal data about auth creds
  * audit: display name for auth is shown in logs [GH-176]
  * command/*: `-insecure` has been renamed to `-tls-skip-verify` [GH-130]
  * command/*: `VAULT_TOKEN` overrides local stored auth [GH-162]
  * command/server: environment variables are copy-pastable
  * credential/app-id: hash of app and user ID are in metadata [GH-176]
  * http: HTTP API accepts `X-Vault-Token` as auth header [GH-124]
  * logical/*: Generate help output even if no synopsis specified

BUG FIXES:

  * core: login endpoints should never return secrets
  * core: Internal data should never be returned from core endpoints
  * core: defer barrier initialization to as late as possible to avoid
      error cases during init that corrupt data (no data loss)
  * core: guard against invalid init config earlier
  * audit/file: create file if it doesn't exist [GH-148]
  * command/*: ignore directories when traversing CA paths [GH-181]
  * credential/*: all policy mapping keys are case insensitive [GH-163]
  * physical/consul: Fixing path for locking so HA works in every case

## 0.1.1 (May 2, 2015)

SECURITY CHANGES:

  * physical/file: create the storge with 0600 permissions [GH-102]
  * token/disk: write the token to disk with 0600 perms

IMPROVEMENTS:

  * core: Very verbose error if mlock fails [GH-59]
  * command/*: On error with TLS oversized record, show more human-friendly
      error message. [GH-123]
  * command/read: `lease_renewable` is now outputed along with the secret
      to show whether it is renewable or not
  * command/server: Add configuration option to disable mlock
  * command/server: Disable mlock for dev mode so it works on more systems

BUG FIXES:

  * core: if token helper isn't absolute, prepend with path to Vault
      executable, not "vault" (which requires PATH) [GH-60]
  * core: Any "mapping" routes allow hyphens in keys [GH-119]
  * core: Validate `advertise_addr` is a valid URL with scheme [GH-106]
  * command/auth: Using an invalid token won't crash [GH-75]
  * credential/app-id: app and user IDs can have hyphens in keys [GH-119]
  * helper/password: import proper DLL for Windows to ask password [GH-83]

## 0.1.0 (April 28, 2015)

  * Initial release