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101 lines
4.1 KiB
Go
101 lines
4.1 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package crypto
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import (
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"errors"
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"fmt"
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)
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// Error is the generic type for any error happening during decrypting
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// an object. It indicates that the object itself or its metadata was
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// modified accidentally or maliciously.
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type Error struct {
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msg string
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cause error
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}
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// Errorf - formats according to a format specifier and returns
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// the string as a value that satisfies error of type crypto.Error
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func Errorf(format string, a ...interface{}) error {
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e := fmt.Errorf(format, a...)
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ee := Error{}
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ee.msg = e.Error()
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ee.cause = errors.Unwrap(e)
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return ee
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}
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// Unwrap the internal error.
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func (e Error) Unwrap() error { return e.cause }
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// Error 'error' compatible method.
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func (e Error) Error() string {
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if e.msg == "" {
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return "crypto: cause <nil>"
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}
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return e.msg
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}
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var (
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// ErrInvalidEncryptionMethod indicates that the specified SSE encryption method
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// is not supported.
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ErrInvalidEncryptionMethod = Errorf("The encryption method is not supported")
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// ErrInvalidCustomerAlgorithm indicates that the specified SSE-C algorithm
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// is not supported.
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ErrInvalidCustomerAlgorithm = Errorf("The SSE-C algorithm is not supported")
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// ErrMissingCustomerKey indicates that the HTTP headers contains no SSE-C client key.
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ErrMissingCustomerKey = Errorf("The SSE-C request is missing the customer key")
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// ErrMissingCustomerKeyMD5 indicates that the HTTP headers contains no SSE-C client key
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// MD5 checksum.
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ErrMissingCustomerKeyMD5 = Errorf("The SSE-C request is missing the customer key MD5")
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// ErrInvalidCustomerKey indicates that the SSE-C client key is not valid - e.g. not a
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// base64-encoded string or not 256 bits long.
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ErrInvalidCustomerKey = Errorf("The SSE-C client key is invalid")
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// ErrSecretKeyMismatch indicates that the provided secret key (SSE-C client key / SSE-S3 KMS key)
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// does not match the secret key used during encrypting the object.
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ErrSecretKeyMismatch = Errorf("The secret key does not match the secret key used during upload")
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// ErrCustomerKeyMD5Mismatch indicates that the SSE-C key MD5 does not match the
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// computed MD5 sum. This means that the client provided either the wrong key for
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// a certain MD5 checksum or the wrong MD5 for a certain key.
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ErrCustomerKeyMD5Mismatch = Errorf("The provided SSE-C key MD5 does not match the computed MD5 of the SSE-C key")
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// ErrIncompatibleEncryptionMethod indicates that both SSE-C headers and SSE-S3 headers were specified, and are incompatible
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// The client needs to remove the SSE-S3 header or the SSE-C headers
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ErrIncompatibleEncryptionMethod = Errorf("Server side encryption specified with both SSE-C and SSE-S3 headers")
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// ErrInvalidEncryptionKeyID returns error when KMS key id contains invalid characters
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ErrInvalidEncryptionKeyID = Errorf("KMS KeyID contains unsupported characters")
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)
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var (
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errMissingInternalIV = Errorf("The object metadata is missing the internal encryption IV")
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errMissingInternalSealAlgorithm = Errorf("The object metadata is missing the internal seal algorithm")
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errInvalidInternalIV = Errorf("The internal encryption IV is malformed")
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errInvalidInternalSealAlgorithm = Errorf("The internal seal algorithm is invalid and not supported")
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)
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// errOutOfEntropy indicates that the a source of randomness (PRNG) wasn't able
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// to produce enough random data. This is fatal error and should cause a panic.
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var errOutOfEntropy = Errorf("Unable to read enough randomness from the system")
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