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小程序数据解密，增加手机号解密，兼容之前的用户信息解密

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This commit is contained in:
ciel yu
2019-10-12 17:38:41 +08:00
parent 4e6fd625da
commit 0dffcde475
1 changed files with 23 additions and 23 deletions
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46
miniprogram/decrypt.go
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@@ -36,7 +36,7 @@ type UserInfo struct {
} `json:"watermark"`
}
// 用户手机号
// PhoneInfo 用户手机号
type PhoneInfo struct {
PhoneNumber string `json:"phoneNumber"`
PurePhoneNumber string `json:"purePhoneNumber"`
@@ -47,7 +47,28 @@ type PhoneInfo struct {
} `json:"watermark"`
}
// get cipherText
// pkcs7Unpad returns slice of the original data without padding
func pkcs7Unpad(data []byte, blockSize int) ([]byte, error) {
if blockSize <= 0 {
return nil, ErrInvalidBlockSize
}
if len(data)%blockSize != 0 || len(data) == 0 {
return nil, ErrInvalidPKCS7Data
}
c := data[len(data)-1]
n := int(c)
if n == 0 || n > len(data) {
return nil, ErrInvalidPKCS7Padding
}
for i := 0; i < n; i++ {
if data[len(data)-n+i] != c {
return nil, ErrInvalidPKCS7Padding
}
}
return data[:len(data)-n], nil
}
// getCipherText returns slice of the cipher text
func getCipherText(sessionKey, encryptedData, iv string) ([]byte, error) {
aesKey, err := base64.StdEncoding.DecodeString(sessionKey)
if err != nil {
@@ -74,27 +95,6 @@ func getCipherText(sessionKey, encryptedData, iv string) ([]byte, error) {
return cipherText, nil
}
// pkcs7Unpad returns slice of the original data without padding
func pkcs7Unpad(data []byte, blockSize int) ([]byte, error) {
if blockSize <= 0 {
return nil, ErrInvalidBlockSize
}
if len(data)%blockSize != 0 || len(data) == 0 {
return nil, ErrInvalidPKCS7Data
}
c := data[len(data)-1]
n := int(c)
if n == 0 || n > len(data) {
return nil, ErrInvalidPKCS7Padding
}
for i := 0; i < n; i++ {
if data[len(data)-n+i] != c {
return nil, ErrInvalidPKCS7Padding
}
}
return data[:len(data)-n], nil
}
// Decrypt 解密数据
func (wxa *MiniProgram) Decrypt(sessionKey, encryptedData, iv string) (*UserInfo, error) {
cipherText, err := getCipherText(sessionKey, encryptedData, iv)