SSL Services

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SSL service "ssl:C"

Command Header Available since system-version Available from service-sessions Description
0x00010002 Basically main-only Initialize
0x000200C2 CreateContext
0x00030000 CreateRootCertChain
0x00040040 DestroyRootCertChain
0x00050082 Main-only AddTrustedRootCA
0x00060080 Main-only RootCertChainAddDefaultCert
0x00070080 Main-only RootCertChainRemoveCert
0x00080000 This writes an output u32 to cmdreply[2](created context handle).
0x00090040 (u32 handle for a context) This is used for destroying a context created by command 0x00080000.
0x000A0082 Main-only (u32 contexthandle, u32 size, ((Size<<4) | 10), inbufptr) Writes the output cert-context-handle to cmdreply[2]. This uses a context created by command 0x00080000. This adds the specified cert to this context.
0x000B0080 Main-only (u32 contexthandle, u8 inval2) Writes an output cert-context-handle to cmdreply[2]. This uses a context created by command 0x00080000. This just returns error 0xD8A0B83D eventually.
0x000C0080 Main-only (u32 contexthandle, u32 certcontexthandle) This uses a context created by command 0x00080000. This removes the specified cert from the context.
0x000D0084 Main-only OpenClientCertContext
0x000E0040 Main-only OpenDefaultClientCertContext
0x000F0040 Main-only CloseClientCertContext
0x00100000 All GatherEntropy
0x00110042 All GenerateRandomData
0x00120042 InitializeConnectionSession
0x00130040 Context-only StartConnection
0x00140040 Context-only StartConnectionGetOut
0x00150082 Context-only Read
0x00160082 Context-only (u32 contexthandle, u32 size, ((Size<<4) | 12), outbufptr) Writes an output u32 to cmdreply[2].
0x00170082 Write
0x00180080 ContextSetRootCertChain
0x00190080 Context-only ContextSetClientCert
0x001A0080 Context-only (u32 contexthandle, u32 handle) This writes a context handle created by command 0x00080000 into the session context.
0x001B0080 Context-only ContextClearOpt
0x001C00C4 Context-only (u32 contexthandle, u32 size0, u32 size1, ((Size0<<4) | 12), outbufptr0, ((Size1<<4) | 12), outbufptr1) This copies two strings to the specified output buffers, each string is only copied if it was successfully loaded. The out sizes include the nul-terminator.
0x001D0040 Context-only (u32 contexthandle) Writes an output u32 from the context state to cmdreply[2].
0x001E0040 All DestroyContext
0x001F0082 Context-only ContextInitSharedmem
0x00200082 Context-only (contexthandle, u32 size, ((Size<<4) | 10), inbufptr) Inbuf seems to be a cert?

Going by strings in the SSL sysmodule it appears the sysmodule uses RSA BSAFE(like certain other 3DS software), this is also likely where the "ssl:C" name comes from(RSA BSAFE "SSL-C").

Similar to HTTPC, each SSL context is used with a dedicated service session which gets opened after creating that context. Following creating the context + opening the service session, SSLC:InitializeConnectionSession is used from that service session for that context. Afterwards, all commands which require a handle for this context are done with this dedicated service session.

Internally there's a separate object vtable used with the above SSLC commands, for the main session(where SSLC:InitializeConnectionSession wasn't used), and context sessions where SSLC:InitializeConnectionSession was used. Error 0xD960BBF4 will be returned if a command was used with the wrong session type.

Like some other commands, 0x001F0082 and 0x00200082 are not used by HTTP-sysmodule.

Among commands 0x00180080..0x001B0080 none of them are completely mandatory. However, with the default settings at bare minimum a RootCertChain needs selected otherwise an untrusted-RootCA error will trigger eventually.

It's unknown whether TLS server->client connections are supported.

Commands 0x00080000..0x000C0080

These appear to be basically the same as the RootCertChain 0x00030000..0x00070080 commands, except with a different context. The equivalent of RootCertChainAddDefaultCert in this set(0x000B0080) is not usable however.

It's unknown what this context is actually used for.

Error codes

Error code Description
0xd8a0b836 The specified RootCertChain handle was not found in the linked-list.