Costco
OpenID Configuration
https://login.costco.com/.well-known/openid-configuration
OAuth 2.0 Authorization Server Metadata
https://login.costco.com/.well-known/oauth-authorization-server
JWKS URI
https://login.costco.com/pf/JWKS
Active Keys
| KID | Use | Alg/Crv | Key Length | Observed |
|---|---|---|---|---|
| Y4yKbx4HyatCY9tpVit-MGG7hYc_RS256 | sig | RS256 | 2048 | 2026-10-20 |
| hDYooOKiq9EwmgAu2tNTPZ3_KVA | sig | 2048 | 2026-10-20 | |
| sV299y1ITPUFeY_Bq_JG265y1yM | enc | P-521 | 521 | 2026-10-20 |
| YoXa_-iqBFj74UFLl6DQiv9oawA | enc | P-256 | 256 | 2026-10-20 |
| M1JrKd-fZAyQ_9gU0HV4bcLeZDc | enc | 2048 | 2026-10-20 | |
| k7lUN1RrgvVpoCMfUNBkZWTjMso | enc | P-384 | 384 | 2026-10-20 |
| hDYooOKiq9EwmgAu2tNTPZ3_KVA_RS256 | sig | RS256 | 2048 | 2026-10-20 |
| Y4yKbx4HyatCY9tpVit-MGG7hYc | sig | 2048 | 2026-10-20 | |
| FqIDo-EGAzXLK_1-r066V2_hmts | sig | P-521 | 521 | 2026-10-20 |
| _TCH63J7k7Tlu70mIkTOTl7TJ2g | sig | P-384 | 384 | 2026-10-20 |
| JiLlcUkPr3zuUs2M4m6f5O6ecuU | sig | P-384 | 384 | 2026-10-20 |
| c32vRKHdaRVT1kvWSi_RmoA5pxg | sig | P-256 | 256 | 2026-10-20 |
| eAF6E3icXUrnjr3cjHYudbI2KuY | sig | P-256 | 256 | 2026-10-20 |
| 0v2VnLcUYj8G5PXijjyDGxooSAg | sig | P-521 | 521 | 2026-10-20 |
| UVXRuAhNTdrdyR2jXm3KqOT05Qc_RS256 | sig | RS256 | 2048 | 2026-10-19 |
| UVXRuAhNTdrdyR2jXm3KqOT05Qc | sig | 2048 | 2026-10-19 | |
| q7u4hHZ0wpxSlnRb76U0r1iYFR4 | sig | P-256 | 256 | 2026-10-19 |
| rxNDFTkR0BoukpU0Lc9Lw_U8WTE | sig | P-384 | 384 | 2026-10-19 |
| IVvn5LCidcRF8bXnK2T7g6nGvB0 | sig | P-521 | 521 | 2026-10-19 |
Identity Provider Signals
No listed provider signal was found in the available response headers. These providers may still be in use.
Recently Deactivated Keys
(Most recent 10 records shown)
| KID | Use | Alg/Crv | Key Length | Observed |
|---|---|---|---|---|
| _gTPm8Gr4F3fFJOft_3P6E9LCJ8 | enc | P-521 | 521 | 2026-10-19 to 2026-10-20 (0 days) |
| WVEzgh3TJ9rTKUZLaIhT2owle6s | sig | P-384 | 384 | 2026-10-18 to 2026-10-20 (2 days) |
| RV4ZEIGpYW9nomUzJVVMgV9X9pg | sig | P-384 | 384 | 2026-10-19 to 2026-10-20 (0 days) |
| S4dkLhsgsA6nGYxGMAlMLYNt5b4 | enc | 2048 | 2026-10-19 to 2026-10-20 (0 days) | |
| v3DUFOq23XTNHm7p5m1Ko_WJOF4 | sig | P-256 | 256 | 2026-10-19 to 2026-10-20 (0 days) |
| G4Ct8qoFLqYiuOSQ8XtXj5o-0sQ_RS256 | sig | RS256 | 2048 | 2026-10-19 to 2026-10-20 (0 days) |
| G4Ct8qoFLqYiuOSQ8XtXj5o-0sQ | sig | 2048 | 2026-10-19 to 2026-10-20 (0 days) | |
| wa45gtfSDQRwCmWPEEzrtxMaUWQ | enc | P-384 | 384 | 2026-10-19 to 2026-10-20 (0 days) |
| 5AXUajEu0xJhXSmwH0z2ie7rAa0 | enc | P-256 | 256 | 2026-10-19 to 2026-10-20 (0 days) |
| KwOjzx0_KRnfkLTQ6V7pPiLFfbY | sig | P-521 | 521 | 2026-10-18 to 2026-10-20 (2 days) |