wehub-resource-sync
55 lines
1.9 KiB
Go
55 lines
1.9 KiB
Go
// Copyright 2024 Dolthub, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package auth
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import (
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"fmt"
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"github.com/dolthub/doltgresql/server/auth/rfc5802"
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)
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// ScramSha256Password is the struct form of an encrypted password.
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type ScramSha256Password struct {
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Iterations uint32
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Salt rfc5802.OctetString
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StoredKey rfc5802.OctetString
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ServerKey rfc5802.OctetString
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}
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// NewScramSha256Password creates a ScramSha256Password with a randomly-generated salt.
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func NewScramSha256Password(rawPassword string) (*ScramSha256Password, error) {
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// This is unlikely to change, but it's defined here since we don't want to reference it elsewhere accidentally
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const iterations = 4096
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salt := GenerateRandomOctetString(16)
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saltedPassword, err := rfc5802.SaltedPassword(rawPassword, salt, iterations)
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if err != nil {
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return nil, err
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}
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storedKey := rfc5802.StoredKey(rfc5802.ClientKey(saltedPassword))
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serverKey := rfc5802.ServerKey(saltedPassword)
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return &ScramSha256Password{
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Iterations: iterations,
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Salt: salt,
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StoredKey: storedKey,
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ServerKey: serverKey,
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}, nil
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}
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// AsPasswordString returns the password as defined in https://www.postgresql.org/docs/15/catalog-pg-authid.html
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func (password ScramSha256Password) AsPasswordString() string {
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return fmt.Sprintf(`SCRAM-SHA-256$%d:%s$%s:%s`,
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password.Iterations, password.Salt.ToBase64(), password.StoredKey.ToBase64(), password.ServerKey.ToBase64())
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}
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