DNS_ERROR_NSEC3_INCOMPATIBLE_WITH_RSA_SHA1 - 9103 (0x238F)
NSEC3 is not compatible with the RSA-SHA-1 algorithm. Choose a different algorithm or use NSEC. This value was also named DNS_ERROR_INVALID_NSEC3_PARAMETERS
Updated: Feb 21, 2026
Technical Meaning
This error code, DNS_ERROR_NSEC3_INCOMPATIBLE_WITH_RSA_SHA1, indicates that the NSEC3 (Next Security Resource Record 3) algorithm is not compatible with the RSA-SHA-1 cryptographic algorithm. This incompatibility can arise when attempting to use a specific DNS security mechanism with an incompatible cryptographic method.
Error Details
The error code 9103 or 0x238F signifies that there is a mismatch between the NSEC3 algorithm and the RSA-SHA-1 algorithm. This error was also previously referred to as DNS_ERROR_INVALID_NSEC3_PARAMETERS, suggesting that it may be related to invalid parameters being used in conjunction with these algorithms.
Usage Context
This error typically occurs during DNS operations where NSEC3 is expected to be used, but the RSA-SHA-1 algorithm is not supported or incompatible. It can arise when attempting to validate or generate DNSSEC (Domain Name System Security Extensions) records that require a specific cryptographic method.
Developer Interpretation
Developers should interpret this error as an indication that the specified NSEC3 algorithm cannot be used with RSA-SHA-1. This may necessitate using a different algorithm that is compatible with the required cryptographic methods or ensuring that the correct parameters are being utilized in the DNS operations.
Related Errors
DNS_ERROR_INVALID_NSEC3_PARAMETERS- Other DNS-related errors related to NSEC3 and cryptographic algorithms
FAQ
Q: What does this error mean?
A: This error indicates an incompatibility between the NSEC3 algorithm and the RSA-SHA-1 cryptographic method.
Q: How can I resolve this issue?
A: Ensure that you are using a compatible algorithm with your DNS operations. Consult the documentation for the specific cryptographic methods supported by your environment.
Summary
The DNS_ERROR_NSEC3_INCOMPATIBLE_WITH_RSA_SHA1 error code is used to indicate an incompatibility between NSEC3 and RSA-SHA-1 algorithms during DNS operations. Developers should ensure that they are using compatible algorithms for their DNSSEC implementations.