# CertPathValidatorException.Reason Added in[API level 24](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) # Reason ``` interface Reason : Serializable ``` |--------------------------------------------------------------------------------------------------------------------------------------------------------------| | [java.security.cert.CertPathValidatorException.Reason](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.Reason#) | 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| Known Direct Subclasses [CertPathValidatorException.BasicReason](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason),[PKIXReason](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason) |----------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------| | [CertPathValidatorException.BasicReason](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason) | The BasicReason enumerates the potential reasons that a certification path of any type may be invalid. | | [PKIXReason](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason) | The`PKIXReason`enumerates the potential PKIX-specific reasons that an X. | | 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| Known Indirect Subclasses [CertPathValidatorException.BasicReason.ALGORITHM_CONSTRAINED](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:ALGORITHM_CONSTRAINED),[CertPathValidatorException.BasicReason.EXPIRED](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:EXPIRED),[CertPathValidatorException.BasicReason.INVALID_SIGNATURE](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:INVALID_SIGNATURE),[CertPathValidatorException.BasicReason.NOT_YET_VALID](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:NOT_YET_VALID),[CertPathValidatorException.BasicReason.REVOKED](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:REVOKED),[CertPathValidatorException.BasicReason.UNDETERMINED_REVOCATION_STATUS](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:UNDETERMINED_REVOCATION_STATUS),[CertPathValidatorException.BasicReason.UNSPECIFIED](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:UNSPECIFIED),[PKIXReason.INVALID_KEY_USAGE](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:INVALID_KEY_USAGE),[PKIXReason.INVALID_NAME](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:INVALID_NAME),[PKIXReason.INVALID_POLICY](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:INVALID_POLICY),[PKIXReason.NAME_CHAINING](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:NAME_CHAINING),[PKIXReason.NOT_CA_CERT](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:NOT_CA_CERT), and 3 others. |-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------| | [CertPathValidatorException.BasicReason.ALGORITHM_CONSTRAINED](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:ALGORITHM_CONSTRAINED) | The public key or the signature algorithm has been constrained. | | [CertPathValidatorException.BasicReason.EXPIRED](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:EXPIRED) | The certificate is expired. | | [CertPathValidatorException.BasicReason.INVALID_SIGNATURE](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:INVALID_SIGNATURE) | The signature is invalid. | | [CertPathValidatorException.BasicReason.NOT_YET_VALID](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:NOT_YET_VALID) | The certificate is not yet valid. | | [CertPathValidatorException.BasicReason.REVOKED](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:REVOKED) | The certificate is revoked. | | [CertPathValidatorException.BasicReason.UNDETERMINED_REVOCATION_STATUS](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:UNDETERMINED_REVOCATION_STATUS) | The revocation status of the certificate could not be determined. | | [CertPathValidatorException.BasicReason.UNSPECIFIED](https://developer.android.com/reference/kotlin/java/security/cert/CertPathValidatorException.BasicReason#ENUM_VALUE:UNSPECIFIED) | Unspecified reason. | | [PKIXReason.INVALID_KEY_USAGE](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:INVALID_KEY_USAGE) | The certificate's key usage is invalid. | | [PKIXReason.INVALID_NAME](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:INVALID_NAME) | The name constraints have been violated. | | [PKIXReason.INVALID_POLICY](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:INVALID_POLICY) | The policy constraints have been violated. | | [PKIXReason.NAME_CHAINING](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:NAME_CHAINING) | The certificate does not chain correctly. | | [PKIXReason.NOT_CA_CERT](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:NOT_CA_CERT) | The certificate is not a CA certificate. | | [PKIXReason.NO_TRUST_ANCHOR](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:NO_TRUST_ANCHOR) | No acceptable trust anchor found. | | [PKIXReason.PATH_TOO_LONG](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:PATH_TOO_LONG) | The path length constraint has been violated. | | [PKIXReason.UNRECOGNIZED_CRIT_EXT](https://developer.android.com/reference/kotlin/java/security/cert/PKIXReason#ENUM_VALUE:UNRECOGNIZED_CRIT_EXT) | The certificate contains one or more unrecognized critical extensions. | | The reason the validation algorithm failed. ## Summary