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85 lines
5.0 KiB
Go
85 lines
5.0 KiB
Go
// https://datatracker.ietf.org/doc/html/rfc5652#section-6.3
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package padding
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import (
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"reflect"
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"testing"
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)
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func Test_pkcs7Padding_Pad(t *testing.T) {
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pkcs7 := NewPKCS7Padding(16)
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tests := []struct {
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name string
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src []byte
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want []byte
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}{
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{"16 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16}},
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{"15 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 1}},
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{"14 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 2, 2}},
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{"13 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 3, 3, 3}},
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{"12 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 4, 4, 4, 4}},
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{"11 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 5, 5, 5, 5, 5}},
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{"10 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 6, 6, 6, 6, 6, 6}},
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{"9 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 7, 7, 7, 7, 7, 7, 7}},
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{"8 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 8, 8, 8, 8, 8, 8}},
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{"7 bytes", []byte{0, 1, 2, 3, 4, 5, 6}, []byte{0, 1, 2, 3, 4, 5, 6, 9, 9, 9, 9, 9, 9, 9, 9, 9}},
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{"6 bytes", []byte{0, 1, 2, 3, 4, 5}, []byte{0, 1, 2, 3, 4, 5, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10}},
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{"5 bytes", []byte{0, 1, 2, 3, 4}, []byte{0, 1, 2, 3, 4, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11}},
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{"4 bytes", []byte{0, 1, 2, 3}, []byte{0, 1, 2, 3, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12}},
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{"3 bytes", []byte{0, 1, 2}, []byte{0, 1, 2, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13}},
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{"2 bytes", []byte{0, 1}, []byte{0, 1, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14}},
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{"1 bytes", []byte{0}, []byte{0, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15}},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := pkcs7.Pad(tt.src); !reflect.DeepEqual(got, tt.want) {
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t.Errorf("pkcs7Padding.Pad() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func Test_pkcs7Padding_Unpad(t *testing.T) {
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pkcs7 := NewPKCS7Padding(16)
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tests := []struct {
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name string
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want []byte
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src []byte
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wantErr bool
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}{
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{"16 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16}, false},
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{"15 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 1}, false},
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{"14 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 2, 2}, false},
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{"13 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 3, 3, 3}, false},
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{"12 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 4, 4, 4, 4}, false},
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{"11 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 5, 5, 5, 5, 5}, false},
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{"10 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 6, 6, 6, 6, 6, 6}, false},
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{"9 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7, 8}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 7, 7, 7, 7, 7, 7, 7}, false},
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{"8 bytes", []byte{0, 1, 2, 3, 4, 5, 6, 7}, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 8, 8, 8, 8, 8, 8}, false},
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{"7 bytes", []byte{0, 1, 2, 3, 4, 5, 6}, []byte{0, 1, 2, 3, 4, 5, 6, 9, 9, 9, 9, 9, 9, 9, 9, 9}, false},
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{"6 bytes", []byte{0, 1, 2, 3, 4, 5}, []byte{0, 1, 2, 3, 4, 5, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10}, false},
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{"5 bytes", []byte{0, 1, 2, 3, 4}, []byte{0, 1, 2, 3, 4, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11}, false},
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{"4 bytes", []byte{0, 1, 2, 3}, []byte{0, 1, 2, 3, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12}, false},
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{"3 bytes", []byte{0, 1, 2}, []byte{0, 1, 2, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13}, false},
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{"2 bytes", []byte{0, 1}, []byte{0, 1, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14}, false},
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{"1 bytes", []byte{0}, []byte{0, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15}, false},
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{"invalid src length", nil, []byte{0, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15}, true},
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{"invalid padding byte", nil, []byte{0, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 17}, true},
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{"inconsistent padding bytes", nil, []byte{0, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 15}, true},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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got, err := pkcs7.Unpad(tt.src)
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if (err != nil) != tt.wantErr {
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t.Errorf("pkcs7Padding.Unpad() error = %v, wantErr %v", err, tt.wantErr)
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return
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}
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if !reflect.DeepEqual(got, tt.want) {
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t.Errorf("pkcs7Padding.Unpad() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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